Adding an encrypted LUKS disk to a LUKS+LVM root filesystem? https://askubuntu.com/questions/1563133/adding-an-encrypted-luks-disk-to-a-lukslvm-root-filesystem

I have the following problem:

How can I add storage to a machine already using LUKS+LVM without being asked for a passphrase for every added disk?

Goal: Add space to the logical volume (LV) lv-var mounted on /var.

I'm using Ubuntu 24.04 LTS

What I tried:

  • Added a new disk to the VM. It’s detected as sdb.
  • Encrypted the disk with LUKS and opened it as luks_sdb.
  • Opened the new disk’s LUKS container and created a physical volume (PV) on it.
  • Added this PV to the volume group (VG) ubuntu-vg, where lv-var lives (using vgextend).
  • Extended lv-var (using lvextend).
  • Resized the filesystem with resize2fs because it’s ext4.

To avoid needing a separate passphrase prompt for each disk, I created a LUKS key:

  • Created a keyfile and added it to the LUKS container.
  • Updated /etc/crypttab and added an entry for the new disk with luks_sdb.
  • Ran update-initramfs -u. Everything looked fine, so I rebooted to be sure. That’s when the bad news appeared.

It seems that because lv-var needs the device /dev/sdb and that disk is still encrypted at boot, almost everything fails... (I don’t fully understand what’s happening here).

I get a series of messages like:

mdadm: No arrays found in config file or automatically

Which is odd since I didn’t add anything with RAID.

Then:

ALERT! /dev/mapper/ubuntu--vg-ubuntu--lv does not exist. Dropping to a shell!

I end up in an initramfs shell (a minimal filesystem that helps boot Linux) with /bin/sh.

To get out, I have to run:

  • cryptsetup open /dev/sdb luks_sdb It then asks the passphrase.
  • exit

Then the boot process continues normally.

This isn’t very scalable — if I need to add three or four disks per machine, we’ll have to enter 4–5 passphrases just to reboot one machine.

P.S.: I already tried using initramfs hooks that should add the LUKS keyfile during boot, but that didn’t work... Maybe the LUKS+LVM setup was not thought to be used with adding encrypted disks to the root filesystem, in a logical volume such as /var, since we have on the fstab file: /var ext4 defaults 0 1, which will make this LV to mount at the same time as the root filesystem, I think.

$ lsblk
NAME                        MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINTS
sda                           8:0    0   35G  0 disk
├─sda1                        8:1    0    1G  0 part  /boot/efi
├─sda2                        8:2    0    2G  0 part  /boot
└─sda3                        8:3    0 31.9G  0 part
  └─dm_crypt-0              252:0    0 31.9G  0 crypt
    ├─ubuntu--vg-ubuntu--lv 252:2    0 14.4G  0 lvm   /
    ├─ubuntu--vg-lv--opt    252:3    0  7.5G  0 lvm   /opt
    ├─ubuntu--vg-lg--swap   252:4    0    5G  0 lvm   [SWAP]
    └─ubuntu--vg-lv--var    252:5    0   35G  0 lvm   /var
sdb                           8:16   0  500G  0 disk
└─luks_sdb                  252:1    0  500G  0 crypt
  └─ubuntu--vg-lv--var      252:5    0   35G  0 lvm   /var
sr0                          11:0    1  2.6G  0 rom
Problem attaching files on Brave Browser 1.86.142 (on Kubuntu 24.04.3 LTS x86_64) https://askubuntu.com/questions/1563130/problem-attaching-files-on-brave-browser-1-86-142-on-kubuntu-24-04-3-lts-x86-64

I'm a new and inexperienced Linux user. I've only been using it for a couple of months and it's been mostly fine so far. I've got to relearn some things I came to know from Windows XP onwards but I'm optimistic.

I'm running a dual boot system (Kubuntu 24.03 and Windows 11) both on the same NVME drive and a couple more SATA drives formatted as NTFS to be accessible in both OSes. That's the set-up more or less.

I'm having an issue which seems Brave-specific (I gave Firefox a try and I couldn't replicate the behavior) where if I try to attach a file on an e-mail (gmail for example) or upload it to GDrive (by the navigation menu that pops up) or attach it to Facebook Marketplace I get an error (different for every service but it boils down to "file couldn't be uploaded") and nothing happens. If I drag-n-drop the file from my computer on the website, then Brave just crashes.

Any ideas? Thank you

Kubuntu 25.10 Discover goes crazy stealing focus and reopening with errors by itself https://askubuntu.com/questions/1563126/kubuntu-25-10-discover-goes-crazy-stealing-focus-and-reopening-with-errors-by-it

So during normal unattended operation, discover starts opening random "Authentication" windows for updates in the foreground (annoying enough), and then proceeds to error-loop open and close itself automatically. If I click the error description fast enough, it will show me a snap error about some program being open and its PIDs, which will accumulate hundreds of time.

Each time it opens, it steals my focus irrespective of my focus steal prevention settings (extreme) both globally and on the discover window.

Even if I can somehow click fast enough to close those PIDs and let them update. I am stuck with multiple "Discover Updates 1 item" open notifications which will never close.

I am wondering what causes this and how to remove it, as it causes my PC to become unusable during that time. Is there any troubleshooting or further information i can give?

How can I see data output from USB port in Ubuntu? https://askubuntu.com/questions/1563110/how-can-i-see-data-output-from-usb-port-in-ubuntu

Is it possible to log bits/bytes/characters, whatever format of data output through USB in Ubuntu?

I mean exact data which are transferred through USB port of a computer rather than connected device name, time and other metadata.

HP 17t-by400 laptop Intel Iris video - bad color on laptop display https://askubuntu.com/questions/1563078/hp-17t-by400-laptop-intel-iris-video-bad-color-on-laptop-display

I have a fresh install of Ubuntu 22.04.5. All updates are applied. The updates did fix the initial no WiFi issue. All the other hardware seems to work. External HDMI has not been not tested.

Changing color profiles has no effect. That includes the test: Swap red and green profile.

Switching between Wayland and X11 has no effect.

Doing a list of available drivers gives no results, but it does appear to be a driver issue. Current driver Tigerlake-LP GT2 [Iris Xe Graphics] (Rev 01) -- modules: i915, xe. Is there a driver configuration file?

This appears to be an old problem, but none of the found fixes have had any results.

Edit: I found this link which appears to be pertinent to this problem https://github.com/IGCIT/Intel-GPU-Community-Issue-Tracker-IGCIT/issues/643

From the link it looks like a command need to be sent to the display hardware to turn off "display power saving mode" and/or "screen brightness and contrast based on content mode" How might one go about doing this?

Note: Laptop now has 24.04.3 installed no change to problem.

"Authorized Application" from bad g-mail message link - wanting to remove https://askubuntu.com/questions/1563009/authorized-application-from-bad-g-mail-message-link-wanting-to-remove

Using HP Elitebook 830 GS, running Ubuntu 24.04.3LTS, last backed up about 10 days ago.

I got an e-mail from a good and trusted friend, via gmail on my Thunderbird client. He said he had a file for me and I could download it on "Progress Share-File"...except he didn't actually send it to me. His gmail account had been attacked and the attacker then hit me. The address was legit and it was not unusual for me to get other files from this person, always directly, in the past, though.

The email included a link to the file transfer site. On the site was a challenge to insure I was a human. Two challenges, actually. After the challenges I was prompted for my gmail address. After entering the address I was prompted for my password. (this should have been my warning, but I went on) after entering the password, I got a silent message on my phone, asking if this was really me and did I want to proceed? Yes. I was told I'd get a message on whether or not I was approved. I got no such message. I then queried the original sender, my friend. He said there would be challenges, etc. and nothing more in his reply. After talking to him on the phone, he said he sent no messages and no links and had not emailed me at all. He then said that his email had been attacked and it was likely the attacker who had replied to my inquiry.

I was compromised. After 2 or 3 hours I got a message from him about the bogus link. I immediately changed my gmail password, so the one they harvested was useless. I deleted my gmail account from Thunderbird and also mass-mailed via a non-gmail account to all others in my address book with gmail addresses not to click on any links in an email that seemed to be from me.

My skills are very limited. I did some looking around the settings and other info in Thunderbird, connected with my gmail account before I deleted it. There was one entry about an "authorized application," in the timeframe of my mistake. I also copied the source code from the suspect email and saved that information for my friend. I am not able to learn anything from it myself, I don't know how to suss it out. I have done some very elementary operations in terminal, monkey-see-monkey-do with good results.

I am hoping to be able to remove the "Authorized Application" with a little help here. I confess to not having the presence of mind to take notes on everything I did during this event, regarding finding the information about "Authorized Application" information. That may have been found on a settings page in Thunderbird, I can't say for sure.

"Authorized Application (406964657835-aq8lmia8j95dhl1a2bvharmfk3t1hgqj.apps.googleusercontent.com)"

I am not skilled enough to provide adequate information about my issue. I am still convinced that some code somewhere was planted in my computer, in the form of an application. I am able to read and send email in my gmail account, but only through the Google mail presence on the web. I attempted to add a gmail account on Thunderbird, but multiple attempts failed. A screen prompt or reply said something was malformed on my end...username or password or other. Do not try further. (not exact phrasing, but the meaning is exact) I admit lacking the skills to present my issue adequately here. That's on me. I'm willing to pull the plug on this issue. Thank you for your time and effort.

SOLVED - Random freeze with Intel Kabylake (Gen9), Ubuntu 24.04 https://askubuntu.com/questions/1559669/solved-random-freeze-with-intel-kabylake-gen9-ubuntu-24-04

Specifications :

  • Ubuntu 24.04.3 LTS

  • Dell Inc. Inspiron 5770

  • Intel® Core™ i7-8550U × 8 / Intel Kabylake (Gen9)

  • RAM 24 Gio

Issue description :

I'm running Ubuntu with a dual monitor (desktop integrated display + external monitor) for months. Both monitors are independent (joint display as opposed to clone mode). Since the beginning of this week, the integrated display randomly freezes. Even the mouse cursor remains displayed on the frozen screen. Meanwhile, the Ubuntu system and the external monitor keep working normally. The external monitor is configured as the main desktop display. Thus, I can open the settings. Then, switching to clone mode and immediately back to joint mode revive the integrated display.

I'm wondering if a recent software update may have compromised the system stability. Also, I noticed the computer may sometime be very busy, fans are running fast, during power saving mode. In this case, I'm unable to wake up the computer (forced power down).

Could you please help me diagnose the reasons why this occurs and, maybe, find a fix ?

Thanks.

SOLUTION : The issue is related to Wayland, but without much clues about why the primary display freezes (neither causes nor internal consequences). I finally replaced Wayland with the good old Xorg, and everything works well. \o/

5.1 audio channels getting randomly mixed up https://askubuntu.com/questions/1553642/5-1-audio-channels-getting-randomly-mixed-up

I am a new Linux user, freshly migrated from Windows and I'm having a technical problem with 5.1 audio. In short, the output randomly switches audio channels. The problem is, it is random. Sometimes is plays correctly, sometimes not.

I have spent the last few days searching the internet for an answer, but couldn't find anything. Re-mapping the channels permanently doesn't apply, since on paper everything looks ok and half the time it works ok.

Now, in more detail: when playing a video (both online - youtube, and offline - VLC), the sound channels get randomly mixed up. Front-left is coming from rear-left, front centre from rear right, etc. When I pause the video, go into system settings / audio and switch between playback devices, the channels usually get corrected (it often takes quite a few tries though). And then it randomly reappears again. Usually after I pause / unpause or rewind a video. It also happens in games.

I am on Kubuntu 24.04, plasma version 5.27.12, kernel 6.14.0-24-generic. My speakers are SteelSeries Arena 9, connected to the motherboard via USB. MB is MSI X870E Carbon wifi, BIOS 1.A52 (14 July 2025).

Wireplumber gives me the following:

Audio
* ├─ Devices:
* │      45. HD-Audio Generic                    [alsa]
* │      46. USB Audio                           [alsa]
* │     133. SteelSeries Arena 9                 [alsa]
* │  
* ├─ Sinks:
* │      52. HD-Audio Generic Digital Stereo (HDMI) [vol: 0.80]
* │      54. USB Audio Digital Surround 5.1 (IEC958/AC3) [vol: 1.00]
* │  *  159. SteelSeries Arena 9 Analogue Surround 5.1 [vol: 1.15]
* │  
* ├─ Sink endpoints:
* │  
* ├─ Sources:
* │  *  131. USB Audio Digital Stereo (IEC958)   [vol: 1.00]
* │  
* ├─ Source endpoints:
* │  
* └─ Streams:

And this:

id 159, type PipeWire:Interface:Node
  *  alsa.card = "1"
  *  alsa.card_name = "SteelSeries Arena 9"
  *  alsa.class = "generic"
  *  alsa.components = "USB1038:1a05"
  *  alsa.device = "0"
  *  alsa.driver_name = "snd_usb_audio"
  *  alsa.id = "S9"
  *  alsa.long_card_name = "SteelSeries SteelSeries Arena 9 at usb-0000:15:00.0-3.1, full speed"
  *  alsa.mixer_name = "USB Mixer"
  *  alsa.name = "USB Audio"
  *  alsa.resolution_bits = "16"
  *  alsa.subclass = "generic-mix"
  *  alsa.subdevice = "0"
  *  alsa.subdevice_name = "subdevice #0"
  *  api.alsa.card.longname = "SteelSeries SteelSeries Arena 9 at usb-0000:15:00.0-3.1, full speed"
  *  api.alsa.card.name = "SteelSeries Arena 9"
  *  api.alsa.path = "surround51:1"
  *  api.alsa.pcm.card = "1"
  *  api.alsa.pcm.stream = "playback"
  *  audio.adapt.follower = ""
  *  audio.channels = "6"
  *  audio.position = "FL,FR,RL,RR,FC,LFE"
  *  card.profile.device = "7"
  * client.id = "35"
  *  clock.quantum-limit = "8192"
  *  device.api = "alsa"
  *  device.class = "sound"
  * device.id = "133"
  *  device.profile.description = "Analogue Surround 5.1"
  *  device.profile.name = "analog-surround-51"
  *  device.routes = "1"
  * factory.id = "18"
  *  factory.mode = "merge"
  *  factory.name = "api.alsa.pcm.sink"
  *  library.name = "audioconvert/libspa-audioconvert"
  * media.class = "Audio/Sink"
  * node.description = "SteelSeries Arena 9 Analogue Surround 5.1"
  *  node.driver = "true"
  * node.name = "alsa_output.usb-SteelSeries_SteelSeries_Arena_9-00.analog-surround-51.9"
  * node.nick = "SteelSeries Arena 9"
  *  node.pause-on-idle = "false"
  * object.path = "alsa:pcm:1:surround51:1:playback"
  * object.serial = "1887"
  * priority.driver = "1009"
  * priority.session = "1009"

I have checked the PulseAudio output devices and configuration, I tried Pipewire volume control, qpwgraph - nothing helps. Neither do I see anything strange in aplay -L, all looks in order.

If it was a case of permanently mixed up audio channels, I guess it would have been easier to figure out and re-map them, but since it is random, I have no idea what the issue is.

Anyone has any advice what this could be and how it can be fixed?

Update 29 July: as I was getting a bit irritating behaviour in Kubuntu with some activities, I switched to Pop! OS and then to Cachy OS (I will probably stick to this one).

This audio issue is present in both of them. So Ubuntu and Arch based distros. Which leads me to think this could be linked either to PulseAudio or the way 5.1 sound is managed in Linux in general. I'm really puzzled by this. Anyone else ran into a similar issue?

External USB Drive Detached - what is causing it? // uas_eh_abort_handler https://askubuntu.com/questions/1481831/external-usb-drive-detached-what-is-causing-it-uas-eh-abort-handler

I have an external HDD (Seagate RSS LLC Backup Plus Slim) on which a program as heavily writing tonight.

When I checked this morning, I could see that the "lsblk" does not show the harddrive anymore, and I could also not mount it with "sudo mount -a".

The "dmesg" suggest that something happened at around 03:32, logs below: https://pastebin.com/raw/BXNMupVr

I am trying to decipher the messages, and feel here is where things start to go south:

[Thu Aug 10 03:32:37 2023] sd 0:0:0:0: [sda] tag#11 uas_eh_abort_handler 0 uas-tag 7 inflight: CMD OUT

Which eventually looks to me like it shut down the USB ports:

[Thu Aug 10 03:33:38 2023] usb 1-1: USB disconnect, device number 2

[Thu Aug 10 03:33:38 2023] usb 2-2: USB disconnect, device number 2

Where I am bumping my head against the wall is to figure out what has happened exactly / what caused it, so that I can figure out how to prevent it in the future.

As said, I know the HDD was under heavy write-operations at the time. But heavy write alone should not trigger the above, thus trying to understand how to prevent such situation going forward.

My hunch from looking into this so far is that it has to to with "UAS" as opposed to "USB-Storage", but I am not sure I fully have understood it. (Potentially related issue). Also looking into this UAS deactivation tutorial.

Thank you all for any pointers

Update and potential solution

It seems that the UAS driver can cause issues, and changing to the USB-Storage driver may help.

  1. Check if the HDD is on UAS by using "lsusb" and comparing the Bus/Device to "lsusb -t" How to check if UAS

  2. Change the driver from UAS to USB-Storage How to change UAS to USB-Storage

Install dual boot error with grub https://askubuntu.com/questions/1418712/install-dual-boot-error-with-grub

I am trying to install Ubuntu alongside Windows 11. I installed Ubuntu with Rufus on a USB flash drive. I put it in the boot sequence in the BIOS. Instead of launching the Ubuntu installation I have what is shown below. When I ran ls it showed me a black screen with the text that is shown after grub> ls.

GNU GRUB version 2.04

Minimal BASH-like line editing is supported.   
For the first word, TAB lists possible command completions.   
Anywhere else TAB lists possible device or file completions.  

grub> ls
(proc) (hd0) (hd0,gpt4) (hd0,gpt3) (hd0,gpt2) (hd0,gpt1) (cd0)
grub> _

When I boot the Ubuntu live USB only the text that is shown above appears. Install Ubuntu or other options don't appear when I boot the Ubuntu live USB.

Can't shutdown ubuntu 20.04 https://askubuntu.com/questions/1379628/cant-shutdown-ubuntu-20-04

Everything was working fine, but suddenly i can't shutdown my ubuntu system. I've tried manually and from terminal but there is no difference. I also tried to change the grub file : sudo gedit etc/default/grub -made it so it looks like this- GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force" but nothing changed.

I also tried GRUB_CMDLINE_LINUX_DEFAULT="" and trying to see which file blocks the shutdown after shutting down the system but in the end it showed Reached target Shutdown and immediately the screen turned black but the power was still on and the only way to shut it down was to press the power button for a long time.

After editing the etc/default/grub file i run the command sudo update-grub in both situations

The only thing i did was to change the root password to my system and then locking it again as it was by default. I don't know how this might affected my system.

Thank you in advance

==================================Edited====================================

The journalctl --system -b -1 command: https://pastebin.com/4J3zsxRg

Ubuntu 20.04 unable to load in dual boot after Windows 10 update https://askubuntu.com/questions/1376779/ubuntu-20-04-unable-to-load-in-dual-boot-after-windows-10-update

I'm using a dual boot with Windows 10 and Ubuntu 20.04 on an Acer Aspire 3 A315-54-52UL.

After a Windows update yesterday the Grub dual boot screen disappeared, which I could fix. Then I got stuck at a screen with these boot messages.

[  0.219524] ACPI BIOS Error (bug): Could not resolve symbol [_SB.PCI0.DGPV],
AE_NOT_FOUND (20190816/psargs-330)
[  0.219539] ACPI Error: Aborting method _SB.PCI0.RP05.PCRP._ON due to previous error (AE_NOT_FOUND) (20190816/psparse-529)
[  0.771374] integrity: Problem loading X.509 certificate -65
[  0.771392] integrity: Problem loading X.509 certificate -65
Gave up waiting for root file system device.  Common problems:
 - Boot args (cat /proc/cmdline)
   - Check rootdelay= (did the system wait long enough?)
 - Missing modules (cat /proc/modules; ls /dev)
ALERT!  UUID=505a2f88-6a67-42db-973e-f2019292557b does not exist.  Dropping to a shell!

BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu6.3) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs) exit
Gave up waiting for root file system device.  Common problems:
 - Boot args (cat /proc/cmdline)
   - Check rootdelay= (did the system wait long enough?)
 - Missing modules (cat /proc/modules; ls /dev)
ALERT!  UUID=505a2f88-6a67-42db-973e-f2019292557b does not exist.  Dropping to a shell!

BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu6.3) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs) _
apt update in WSL fails: Failed to fetch ... no such file or directory https://askubuntu.com/questions/1372662/apt-update-in-wsl-fails-failed-to-fetch-no-such-file-or-directory

I already updated WSL itself (as Administrator)

> wsl --set-version ubuntu-20.04 2
> wsl --update

Which worked but still did not solve my problem inside the WSL Ubuntu 20.04.

$ sudo apt update
Reading package lists... Error!
E: Failed to fetch store:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_main_binary-amd64_Packages.xz  rename failed, No such file or directory (/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_main_binary-amd64_Packages -> /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_main_binary-amd64_Packages).
E: Failed to fetch store:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_main_i18n_Translation-en.xz  rename failed, No such file or directory (/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_main_i18n_Translation-en -> /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_main_i18n_Translation-en).
E: Failed to fetch store:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_main_cnf_Commands-amd64.xz  rename failed, No such file or directory (/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_main_cnf_Commands-amd64 -> /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_main_cnf_Commands-amd64).
E: Failed to fetch store:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_restricted_binary-amd64_Packages.xz  rename failed, No such file or directory (/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_restricted_binary-amd64_Packages -> /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_restricted_binary-amd64_Packages).
E: Failed to fetch store:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_restricted_i18n_Translation-en.xz  rename failed, No such file or directory (/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_restricted_i18n_Translation-en -> /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_restricted_i18n_Translation-en).
E: Failed to fetch store:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_restricted_cnf_Commands-amd64.xz  rename failed, No such file or directory (/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_restricted_cnf_Commands-amd64 -> /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_restricted_cnf_Commands-amd64).
E: Failed to fetch store:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_universe_binary-amd64_Packages.xz  rename failed, No such file or directory (/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_universe_binary-amd64_Packages -> /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_universe_binary-amd64_Packages).
E: Failed to fetch store:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_universe_i18n_Translation-en.xz  rename failed, No such file or directory (/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_universe_i18n_Translation-en -> /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_universe_i18n_Translation-en).
E: Failed to fetch store:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_universe_cnf_Commands-amd64.xz  rename failed, No such file or directory (/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_focal_universe_cnf_Commands-amd64 -> /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_universe_cnf_Commands-amd64).
...
E: Some index files failed to download. They have been ignored, or old ones used instead.
E: Problem renaming the file /var/cache/apt/srcpkgcache.bin.OL2UsH to /var/cache/apt/srcpkgcache.bin - rename (22: Invalid argument)
E: Problem renaming the file /var/cache/apt/pkgcache.bin.EdYnXG to /var/cache/apt/pkgcache.bin - rename (22: Invalid argument)
W: You may want to run apt-get update to correct these problems
E: The package cache file is corrupted

sudo rm -rf /var/lib/apt/lists/* and sudo apt clean did not help, too. Here are my sources, all from /etc/apt/sources.list.

deb http://archive.ubuntu.com/ubuntu/ focal main restricted
deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted
deb http://archive.ubuntu.com/ubuntu/ focal universe
deb http://archive.ubuntu.com/ubuntu/ focal-updates universe
deb http://archive.ubuntu.com/ubuntu/ focal multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-updates multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
# deb http://archive.canonical.com/ubuntu focal partner
deb http://security.ubuntu.com/ubuntu/ focal-security main restricted
deb http://security.ubuntu.com/ubuntu/ focal-security universe
deb http://security.ubuntu.com/ubuntu/ focal-security multiverse

I don't know if this is WSL related or Ubuntu related, but I guess the first as I never had such problems on native Ubuntu.

I use WSL mostly as SSH and Git client.

Anybody knows whats wrong here?

Webcam flickering https://askubuntu.com/questions/1314624/webcam-flickering

My Webcam is flickering. I tried to change settings in GUVCView and in v4l2ucp (see screenshot, you can see there grey and white stripes, they change all the time) but this does not help, both with power line frequency 60 Hz and 50 Hz. The cam is AUKEY Webcam 1080P Full HD and I have ubuntu 18.04. I must have artificial light because my office has no windows. enter image description here

Giving Plex Media Server Access to External EXFAT Drive on 19.10.1 RaspberryPi 4 4gb https://askubuntu.com/questions/1208132/giving-plex-media-server-access-to-external-exfat-drive-on-19-10-1-raspberrypi-4

Edit2 (SUCCESS): First off, thank you to all who responded! I got my Plex server working perfectly. I didn't get email notifications with updates to the question for some reason so I just checked and got it all working.

@Terrance, I did manually create an actual mount point under "/media/HDD-M" (HDD-M s the drive name, HDD-Movies) through the initial guide I referenced. It did seem to work but Plex was still blind. Following that new mount point would lead me to my drive and allow access but made no difference to Plex. After following @user535733 response I realized the original guide I found may have allowed me to screw things up so I followed it backwards and undid everything before trying the link you posted @Terrance which worked after I messed with the mount point renaming a bit until Ubuntu was satisfied with my efforts. Just like that, it read and streamed without a hitch. For some reason, Ubuntu didn't like "/media/HDD-M" but once I changed it to "/media/SG" it worked without issue. No clue why that syntax made any sort of difference, but it did..

Either way, I really appreciate the assistance so much from you all. I was running Ubuntu fulltime ~13 years ago as a young nerdy kiddo and abandoned it when my mom got me a Macbook for graduating high school early so I forgot most of what I had learned. I plan on this getting me back into linux and eventually being proficient enough to help others like you all helped me.

Edit: I followed @user535733 instructions and immediately hit a wall at step 2 trying to edit permissions. I tried changing the file access to read and write and that seemed to work but had no effect on Plex. Upon trying to change the group I was modifying permissions for, a message came up stating I do not have permission to change the group.

I started off this incredibly frustrating journey a few weeks ago and came to this guide when plex couldn't see directories on my external: https://forums.plex.tv/t/using-ext-ntfs-or-other-format-drives-internal-or-external-on-linux/198544

This flew over my head very fast because of the way it was written, maybe I'm just an idiot and these steps really are perfectly formatted; but I couldn't ever get it to work at any point no matter how many times I tried.

Found AskUbuntu and looked through it which brought me to this post (plex folder access)

It was several years old which concerned me but I figured I would give it a shot. All the commands seemed to work fine but my drive is still inaccessible by Plex.

It is perfectly visible on my desktop, I understand this is a permissions issue with the way Linux is designed, not a fault of Plex or anything.

If anyone could help me out, I would really appreciate it because it's starting to drive me a bit crazy.

Infinite scrolling random numbers on screen after running fsck manually https://askubuntu.com/questions/1149828/infinite-scrolling-random-numbers-on-screen-after-running-fsck-manually

Yesterday I had a lot of Java applications open that were eating into my RAM. I'm a Java developer, so what I usually do in such situations is just reboot. I closed all the apps and did a shutdown. On booting, I was dropped into an initramfs prompt.

enter image description here

initramfs is something I had no clue about, so I just did an exit.

enter image description here

The suggestion was to run fsck on the mentioned filesystem, which I did.

enter image description here

The last line here appears to be the one that causes the mess that follows. Typing y for yes caused my entire screen to become a top-to-bottom infinite scrolling wall of random numbers.

enter image description here

How do I get back control of my computer?

Screenshots of the SMART Data:

enter image description here

enter image description here

Unallocated space doesn't show in Ubuntu installation (dual boot / two drives) https://askubuntu.com/questions/1133098/unallocated-space-doesnt-show-in-ubuntu-installation-dual-boot-two-drives

I have an SSD and an HDD and want to use them for Windows 10 and Ubuntu 18.04. I'm planning on using the SSD for /, /boot and swap and the HDD for /home. I have partitioned my drive as shown in the screenshot.

the screenshot

While the unallocated space from the SSD (38GB) is visible during the installation partitioning, the HDD unallocated space (200GB) is nowhere to be found. All there is is one partition of 950GB (which is the whole drive). What am I doing wrong?

`sudo fbterm` returns "stdin isn't an interactive tty!" https://askubuntu.com/questions/1065197/sudo-fbterm-returns-stdin-isnt-an-interactive-tty

I using Ubuntu 14.04

I installed fbterm using

sudo apt-get install fbterm

But when I type sudo fbterm

There is a message

stdin isn't a interactive tty!

Is that message an error? Or is something wrong?

Desired=Unknown/Install/Remove/Purge/Hold

| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend

|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)

||/ Name                    Version          Architecture     Description
+                                                                           
ii  fbterm                  1.7-2            amd64       A fast framebuffer based terminal emulator for Linux
How to Drag and Drop files to open application? https://askubuntu.com/questions/1030623/how-to-drag-and-drop-files-to-open-application

Since Ubuntu 18.04 I can't drag a file e.g. image file to an open application such as Inkscape or Evolution email message window.

In Ubuntu 17.10 I was able to select the image file by clicking on it, and while holding down left mouse button I would hit the supper key displaying all open windows where for there I could then drop the file in any open app or folders. This is no longer possible/default behaviour since Ubuntu 18.04.

Is there a workaround that would allow me to achieve this or even a way to recreate the same behaviour like in 17.10?

Problem dual booting Windows 10 and Ubuntu - Windows is not loading https://askubuntu.com/questions/975243/problem-dual-booting-windows-10-and-ubuntu-windows-is-not-loading

I have read all the other similar problems here, but I couldn't find the solution to my issue. I installed Ubuntu alongside Windows 10 on a Dell Inspiron 7537. I first restored the system to factory settings, and then I installed Ubuntu.

Grub boot menu options:

Grub Option

Windows is not loading, however if I press F12 as the device is starting up, I see Windows Boot Manager as an option.

Boot Options - F12

What have I done wrong? What are the possible solutions?

what is the value for JAVA_HOME? https://askubuntu.com/questions/908453/what-is-the-value-for-java-home

What is the correct value for JAVA_HOME?

thufir@doge:~$ 
thufir@doge:~$ whereis java
java: /usr/bin/java /usr/share/java /usr/share/man/man1/java.1.gz
thufir@doge:~$ 
thufir@doge:~$ which java
/usr/bin/java
thufir@doge:~$ 
thufir@doge:~$ java -version
openjdk version "1.8.0_121"
OpenJDK Runtime Environment (build 1.8.0_121-8u121-b13-0ubuntu1.16.10.2-b13)
OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode)
thufir@doge:~$ 
thufir@doge:~$ sudo update-alternatives --config java
There is only one alternative in link group java (providing /usr/bin/java): /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
Nothing to configure.
thufir@doge:~$ 
thufir@doge:~$ sudo nano /etc/environment 
thufir@doge:~$ 
thufir@doge:~$ cat /etc/environment 
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64"
thufir@doge:~$ 
thufir@doge:~$ echo $JAVA_HOME
/usr/lib/jvm/java-8-openjdk-amd64
thufir@doge:~$ 
thufir@doge:~$ sudo locate openjdk
/etc/java-8-openjdk
/etc/java-8-openjdk/calendars.properties
/etc/java-8-openjdk/content-types.properties
/etc/java-8-openjdk/flavormap.properties
/etc/java-8-openjdk/images
/etc/java-8-openjdk/jvm-amd64.cfg
/etc/java-8-openjdk/logging.properties
/etc/java-8-openjdk/management
/etc/java-8-openjdk/net.properties
/etc/java-8-openjdk/psfont.properties.ja
/etc/java-8-openjdk/psfontj2d.properties
/etc/java-8-openjdk/security
/etc/java-8-openjdk/sound.properties
/etc/java-8-openjdk/swing.properties
/etc/java-8-openjdk/images/cursors
/etc/java-8-openjdk/images/cursors/cursors.properties
/etc/java-8-openjdk/management/jmxremote.access
/etc/java-8-openjdk/management/jmxremote.password
/etc/java-8-openjdk/management/management.properties
/etc/java-8-openjdk/management/snmp.acl
/etc/java-8-openjdk/security/blacklisted.certs
/etc/java-8-openjdk/security/java.policy
/etc/java-8-openjdk/security/java.security
/etc/java-8-openjdk/security/nss.cfg
/usr/lib/jvm/.java-1.8.0-openjdk-amd64.jinfo
/usr/lib/jvm/java-1.8.0-openjdk-amd64
/usr/lib/jvm/java-8-openjdk-amd64
/usr/lib/jvm/java-8-openjdk-amd64/ASSEMBLY_EXCEPTION
/usr/lib/jvm/java-8-openjdk-amd64/THIRD_PARTY_README
/usr/lib/jvm/java-8-openjdk-amd64/bin
/usr/lib/jvm/java-8-openjdk-amd64/docs
/usr/lib/jvm/java-8-openjdk-amd64/include
/usr/lib/jvm/java-8-openjdk-amd64/jre
/usr/lib/jvm/java-8-openjdk-amd64/lib
/usr/lib/jvm/java-8-openjdk-amd64/man
/usr/lib/jvm/java-8-openjdk-amd64/src.zip
/usr/lib/jvm/java-8-openjdk-amd64/bin/appletviewer
/usr/lib/jvm/java-8-openjdk-amd64/bin/extcheck
/usr/lib/jvm/java-8-openjdk-amd64/bin/idlj
/usr/lib/jvm/java-8-openjdk-amd64/bin/jar
/usr/lib/jvm/java-8-openjdk-amd64/bin/jarsigner
/usr/lib/jvm/java-8-openjdk-amd64/bin/java
/usr/lib/jvm/java-8-openjdk-amd64/bin/java-rmi.cgi
/usr/lib/jvm/java-8-openjdk-amd64/bin/javac
/usr/lib/jvm/java-8-openjdk-amd64/bin/javadoc
/usr/lib/jvm/java-8-openjdk-amd64/bin/javah
/usr/lib/jvm/java-8-openjdk-amd64/bin/javap
/usr/lib/jvm/java-8-openjdk-amd64/bin/jcmd
/usr/lib/jvm/java-8-openjdk-amd64/bin/jconsole
/usr/lib/jvm/java-8-openjdk-amd64/bin/jdb
/usr/lib/jvm/java-8-openjdk-amd64/bin/jdeps
/usr/lib/jvm/java-8-openjdk-amd64/bin/jhat
/usr/lib/jvm/java-8-openjdk-amd64/bin/jinfo
/usr/lib/jvm/java-8-openjdk-amd64/bin/jjs
/usr/lib/jvm/java-8-openjdk-amd64/bin/jmap
/usr/lib/jvm/java-8-openjdk-amd64/bin/jps
/usr/lib/jvm/java-8-openjdk-amd64/bin/jrunscript
/usr/lib/jvm/java-8-openjdk-amd64/bin/jsadebugd
/usr/lib/jvm/java-8-openjdk-amd64/bin/jstack
/usr/lib/jvm/java-8-openjdk-amd64/bin/jstat
/usr/lib/jvm/java-8-openjdk-amd64/bin/jstatd
/usr/lib/jvm/java-8-openjdk-amd64/bin/keytool
/usr/lib/jvm/java-8-openjdk-amd64/bin/native2ascii
/usr/lib/jvm/java-8-openjdk-amd64/bin/orbd
/usr/lib/jvm/java-8-openjdk-amd64/bin/pack200
/usr/lib/jvm/java-8-openjdk-amd64/bin/policytool
/usr/lib/jvm/java-8-openjdk-amd64/bin/rmic
/usr/lib/jvm/java-8-openjdk-amd64/bin/rmid
/usr/lib/jvm/java-8-openjdk-amd64/bin/rmiregistry
/usr/lib/jvm/java-8-openjdk-amd64/bin/schemagen
/usr/lib/jvm/java-8-openjdk-amd64/bin/serialver
/usr/lib/jvm/java-8-openjdk-amd64/bin/servertool
/usr/lib/jvm/java-8-openjdk-amd64/bin/tnameserv
/usr/lib/jvm/java-8-openjdk-amd64/bin/unpack200
/usr/lib/jvm/java-8-openjdk-amd64/bin/wsgen
/usr/lib/jvm/java-8-openjdk-amd64/bin/wsimport
/usr/lib/jvm/java-8-openjdk-amd64/bin/xjc
/usr/lib/jvm/java-8-openjdk-amd64/include/classfile_constants.h
/usr/lib/jvm/java-8-openjdk-amd64/include/jawt.h
/usr/lib/jvm/java-8-openjdk-amd64/include/jdwpTransport.h
/usr/lib/jvm/java-8-openjdk-amd64/include/jni.h
/usr/lib/jvm/java-8-openjdk-amd64/include/jvmti.h
/usr/lib/jvm/java-8-openjdk-amd64/include/jvmticmlr.h
/usr/lib/jvm/java-8-openjdk-amd64/include/linux
/usr/lib/jvm/java-8-openjdk-amd64/include/linux/jawt_md.h
/usr/lib/jvm/java-8-openjdk-amd64/include/linux/jni_md.h
/usr/lib/jvm/java-8-openjdk-amd64/jre/ASSEMBLY_EXCEPTION
/usr/lib/jvm/java-8-openjdk-amd64/jre/THIRD_PARTY_README
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib
/usr/lib/jvm/java-8-openjdk-amd64/jre/man
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/jjs
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/keytool
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/orbd
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/pack200
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/policytool
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/rmid
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/rmiregistry
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/servertool
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/tnameserv
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/unpack200
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/calendars.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/charsets.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/classlist
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/cmm
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/content-types.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/currency.data
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/flavormap.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/hijrah-config-umalqura.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/jar.binfmt
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/jce.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/jexec
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/jsse.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/jvm.hprof.txt
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/logging.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/management
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/management-agent.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/meta-index
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/net.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/psfont.properties.ja
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/psfontj2d.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/resources.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/rt.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/security
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/sound.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/swing.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/tzdb.dat
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/jli
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/jvm.cfg
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/jvm.cfg-default
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libattach.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libawt.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libawt_headless.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libawt_xawt.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libdt_socket.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libfontmanager.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libhprof.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libicedtea-sound.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libinstrument.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libj2gss.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libj2pcsc.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libj2pkcs11.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjaas_unix.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjava.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjava_crw_demo.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjavajpeg.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjavalcms.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjawt.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjdwp.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjsdt.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjsig.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjsound.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjsoundalsa.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libmanagement.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libmlib_image.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libnet.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libnio.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libnpt.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libsaproc.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libsctp.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libsplashscreen.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libsunec.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libunpack.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libverify.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libzip.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/jli/libjli.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/Xusage.txt
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/classes.jsa
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/libjsig.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/libjvm.so
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/cmm/CIEXYZ.pf
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/cmm/GRAY.pf
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/cmm/LINEAR_RGB.pf
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/cmm/PYCC.pf
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/cmm/sRGB.pf
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/cldrdata.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/dnsns.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/icedtea-sound.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/jaccess.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/localedata.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/nashorn.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/sunec.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/sunjce_provider.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/sunpkcs11.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/zipfs.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images/cursors
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images/cursors/cursors.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images/cursors/invalid32x32.gif
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images/cursors/motif_CopyDrop32x32.gif
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images/cursors/motif_CopyNoDrop32x32.gif
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images/cursors/motif_LinkDrop32x32.gif
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images/cursors/motif_LinkNoDrop32x32.gif
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images/cursors/motif_MoveDrop32x32.gif
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/images/cursors/motif_MoveNoDrop32x32.gif
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/management/jmxremote.access
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/management/jmxremote.password
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/management/management.properties
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/management/snmp.acl
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/var/lib/dpkg/info/openjdk-8-jdk-headless:amd64.postinst
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/var/lib/dpkg/info/openjdk-8-jdk:amd64.postinst
/var/lib/dpkg/info/openjdk-8-jdk:amd64.preinst
/var/lib/dpkg/info/openjdk-8-jdk:amd64.prerm
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/var/lib/dpkg/info/openjdk-8-jre-headless:amd64.postrm
/var/lib/dpkg/info/openjdk-8-jre-headless:amd64.preinst
/var/lib/dpkg/info/openjdk-8-jre-headless:amd64.prerm
/var/lib/dpkg/info/openjdk-8-jre:amd64.list
/var/lib/dpkg/info/openjdk-8-jre:amd64.md5sums
/var/lib/dpkg/info/openjdk-8-jre:amd64.postinst
/var/lib/dpkg/info/openjdk-8-jre:amd64.preinst
/var/lib/dpkg/info/openjdk-8-jre:amd64.prerm
/var/lib/dpkg/info/openjdk-8-jre:amd64.shlibs
/var/lib/dpkg/info/openjdk-8-jre:amd64.triggers
thufir@doge:~$ 

note that a sample at least seems to install and run fine. I was concerned about the JVM or JDK version number. However, the Apache WSDL2Java conversion tool complains about the JAVA_HOME variable:

thufir@doge:~$ 
thufir@doge:~$ jars/apache-cxf-3.1.11/bin/wsdlvalidator
ERROR: Set JAVA_HOME to the path where the J2SE 6.0 (JDK6.0) is installed
thufir@doge:~$ 

Perhaps there's another tool which utilizes the JAVA_HOME environment variable, which could be used for testing?

Is it possible to use a custom keyboard layout without sudo access? If so, how? https://askubuntu.com/questions/875163/is-it-possible-to-use-a-custom-keyboard-layout-without-sudo-access-if-so-how

I have been using a custom keyboard for a while, using the instructions detailed in the Help.Ubuntu tutorial Custom keyboard layout definitions and further explained in this question. I have grown quite fond of this keyboard, but I have recently started using a machine where I don't really have sudo access (or rather, I do have some amount of access, but it is really awkward).

So: is it possible to do an equivalent installation that is only for my user, and which does not rely on administrative privileges? More specifically, if it comes to installing specific packages I'm OK with that, but if it requires substituting files outside of my home directory it gets a lot harder.

SSH daemon doesn't start normally https://askubuntu.com/questions/830278/ssh-daemon-doesnt-start-normally

I use Ubuntu server 16.04.1 LTS (Kernel 4.4.0-38-generic x86_64) and installed openssh-server(1:7.2p2-4ubuntu2.1). At first, I used sudo systemctl enable ssh.service, but sshd doesn't start in the boot process.

I check these questions -> (SSH Daemon does not autostart) And tried this article -> (http://blog.roberthallam.org/2010/06/sshd-not-running-at-startup), however sshd doesn't start. (sudo service ssh status is dead.) Of course, I checked that the symbolic link of /etc/rc*.d/S**ssh is created.

Then I added below to /etc/rc.local.

/etc/init.d/ssh start

Finally, sshd does start on boot, but I wonder why normally process doesn't work. It might be because I'm using a USB wireless adapter, but I cannot be sure of that.

Windows partitions not appearing on GRUB and on Ubuntu https://askubuntu.com/questions/749465/windows-partitions-not-appearing-on-grub-and-on-ubuntu

For some reason my bootloader stopped working, and I had to use the recovery disk utility to restore grub. After reinstalling grub, the Windows partitions don't appear anymore (on grub and on Ubuntu).

I tried to boot an Windows installation CD to recover Windows, and make some backups, and it says that I can't do that because the disk is locked (whatever that means).

Results of gdisk -l /dev/sda :

GPT fdisk (gdisk) version 1.0.0

Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 1953525168 sectors, 931.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): DE3382C7-BEC6-4E8D-9E5B-BA230F20056B
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Partitions will be aligned on 2048-sector boundaries
Total free space is 3437 sectors (1.7 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048         1050623   512.0 MiB   8300  EFI System 
   2         1050624      1237592063   589.6 GiB   8300  
   3      1237592064      1237624831   16.0 MiB    0C01  Microsoft 
   4      1237624832      1945298943   337.4 GiB   EF00  Basic data 
   5      1945298944      1953523711   3.9 GiB     8200  

Here's a screenshot of GParted (the Windows partition is highlighted):

Gparted

Using apt-get to remove packages and dependencies https://askubuntu.com/questions/708701/using-apt-get-to-remove-packages-and-dependencies

I've recently been reading through a lot of questions/answers/opinions about removing packages and dependencies. There's a lot of different ways to do it, some being overly convoluted and some being insufficient/incomplete. I want to ask here in one place what others think is the best ways to do go about clearing out a package and everything including configs, dependencies, and the dependencies' configs. I'll offer my method as well that came from a lot of trial and error and hair-pulling.

I changed Volumegroup name via Webmin, now I can't boot. Stuck at initramfs https://askubuntu.com/questions/671249/i-changed-volumegroup-name-via-webmin-now-i-cant-boot-stuck-at-initramfs

I will summarize how I created this error.

I created a lvm, then changed the name of volumegroup. It was ubuntuvm-vg I renamed it ubuntuvmvg. I mounted lvm volume fine and to make sure it also auto mounts I rebooted my Ubuntu server running on VMware. Now I'm stuck at an initramfs screen.
This is my test server. There's nothing important in it, but instead of reinstalling the server I'd rather know how to fix this issue.

When booting Ubuntu is stuck at a black screen with these boot messages.

[    1.924525] hub 2-2:1.0: USB hub found
[    1.928493] hub 2-2:1.0: 7 ports detected
[    1.948171] hidraw: raw HID events driver (C) Jiri Kosina
[    1.952745] usbcore: registered new interface driver usbhid
[    1.952830] usbhid: USB HID core driver
[    1.954682] input: VMware VMware Virtual USB Mouse as /devices/pci0000:00/000
0:00:11.0/0000:02:00.0/usb2/2-1/2-1:1.0/0003:0E0F:0003.0001/input/input4
[    1.955197] hid-generic 0003:0E0F:0003.0001: input,hidraw0: USB HID v1.10 Mou
se [VMware VMware Virtual USB Mouse] on usb-0000:02:00.0-1/input0
[    1.984278] random: lvm urandom read with 38 bits of entropy available
[    4.353072] floppy0: no floppy controllers found
Gave up waiting for root device.  Common problems:
 - Boot args (cat /proc/cmdline)
     - Check rootdelay= (did the system wait long enough?)  
     - Check root= (did the system wait for the right device?)  
 - Missing modules (cat /proc/modules; ls /dev)
ALERT!  /dev/mapper/ubuntuvm--vg-root does not exist. Dropping to a shell!


BusyBox v1.21.1 (Ubuntu 1:1.21.0-1ubuntu1) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs) [   124.997067] random: nonblocking pool is initialized

(initramfs) _
Ubuntu League of Legends very slow https://askubuntu.com/questions/483408/ubuntu-league-of-legends-very-slow

I have an problem fixing everything I want to have on Linux. Like Minecraft, League of Legends, Origin, Curse.

Minecraft and League of Legends are already on my computer. So i just started League of Legends and it started with Medium video settings and lagged so hard I couldn't even play.

40 FPS on slowest settings. 07 FPS on highest settings.

An also Minecraft has big frame drops.

My specs:

Intel Core i7-3630QM CPU / 2.0 GHZ / 4 CORES, 8 THREADS. nVIDIA Geforce GT 650M 2GB. 6 GB Ram.

On Windows everything runs smoothly.

I will really appreciate your help!

Install a game from a Zip File https://askubuntu.com/questions/416927/install-a-game-from-a-zip-file

How do you install a game from a zip file? I downloaded gems from the Ubuntu software centre and they offered a free download it came as a zip file how do you install it?

Reading package list takes forever https://askubuntu.com/questions/251781/reading-package-list-takes-forever

I've been trying to update my stuff on my machine, and it seems like it can't read my package list. It seems like every time i do the sudo apt-get install *something* && sudo apt-get update it gets stuck at reading package list, this have not been a problem before. Here is my specs and whatnot :

  • Memory : 15.8 gb
  • Processor : AMD Phenom(tm) II x4 965 Processor x 4
  • Graphics : Gallium 0.4 on AMD BARTS
  • OS type : 32-bit
  • Netspeed : enter image description here
Problems importing own CA Certificate https://askubuntu.com/questions/226781/problems-importing-own-ca-certificate

So, I have created my own little CA for my own purposes (inside my network, etc) and I know that the setup works (I can directly import the key into applications, and they connect to the server using the key fine).

But! When I tried to import the CA Certificate so that all applications can use it, they don't (firefox and chromium)

I have

  • Placed the cacert.pem in /etc/ssl/certs and ran update-ca-certificates and dpkg-reconfigure ca-certificates

  • Directly placed the cert inside the ca-certificates.crt file (As it wasn't being placed in there inspite of the previous commands)

I'm stumped.

Info:

Ubuntu Desktop, 12.04 x64

cat cacert.pem

-----BEGIN CERTIFICATE-----
MIIDCDCCAnG--snip--8guKJUzT
-----END CERTIFICATE-----

openssl x509 -in cacert.pem -noout -text

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 1xxxxxxxxxxxxxxxxxx3 (0xXXXXXXXXXXXXXX9)
    Signature Algorithm: sha1WithRSAEncryption
        Issuer: C=AU, ST=Western Australia, L=xx, O=xx, OU=Webmasters, CN=haven/emailAddress=xx
        Validity
            Not Before: Dec  8 11:47:37 2012 GMT
            Not After : Dec  6 11:47:37 2022 GMT
        Subject: C=AU, ST=Western Australia, L=xx, O=xx, OU=Webmasters, CN=haven/emailAddress=xx
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (1024 bit)
                Modulus:
                    00:xx:5b
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Subject Key Identifier: 
                38:xx:95
            X509v3 Authority Key Identifier: 
                keyid:38:xx:95

            X509v3 Basic Constraints: 
                CA:TRUE
    Signature Algorithm: sha1WithRSAEncryption
         7b:xx:d3

Thanks in advance!