I have RAID6 disks running well on a old server running Ubuntu 12 with an old mdadm v3.2.5. That RAID is built directly on the disk, not into a partition.

I moved my 5 disks to my new server, with fresh install of Ubuntu 26.

When I boot my new server, the RAID is not created, and a partition is created on the 5 disks! I can not understand how Ubuntu can write to the disks without asking!

If a bring back the disk to my old server, it will not be created, but I can recreate it with the command

mdadm --create /dev/md125 --assume-clean --level=6 --raid-devices=5 /dev/sde /dev/sdd /dev/sdf /dev/sdc /dev/sdb

How can I prevent my new Ubuntu 26 from creating a partition on the 5 RAID disks. I just want UBUNTU to do nothing with them during boot. Than I could use mdadm to assemble, or create the RAID6.

I have played with grub to set to skip option to fsck, and it did not solve my problem. Something else is creating those partitions.

Here is what is created on my 5 RAID6 disks by something

sdb                         8:16   0   2.7T  0 disk
└─sdb1                      8:17   0    16M  0 part
sdc                         8:32   0   2.7T  0 disk
└─sdc1                      8:33   0    16M  0 part
sdd                         8:48   0   2.7T  0 disk
└─sdd1                      8:49   0    16M  0 part
sde                         8:64   0   2.7T  0 disk
└─sde1                      8:65   0    16M  0 part
sdf                         8:80   0   2.7T  0 disk
└─sdf1                      8:81   0    16M  0 part

I'm currently using Ubuntu 26.04 LTS. When I first installed it, everything worked perfectly. I'm also quite new to Linux, so I've relied on ChatGPT a lot for help.

While using Ubuntu, I occasionally removed applications that I didn't need. Following ChatGPT's advice, I usually removed applications with:

sudo apt purge <app>

and then ran:

sudo apt autoremove

I was told that sudo apt autoremove only removes unused libraries and that if other applications still needed those libraries, they would either not be removed or could be reinstalled automatically, so it shouldn't affect the system. I trusted that advice.

After some time, I installed and removed many applications while trying to find software that suited my needs, and I'm sure that after uninstalling applications, I often ran sudo apt autoremove.

At some point, I started noticing that some system applications became slow or partially broken. For example, when I click a file upload button in a web browser and the file picker dialog opens, the file picker becomes very laggy and slow, although it doesn't completely freeze.

In addition, my default App Center now crashes and shows the following message:

"Is Not Responding. You may choose to wait a short while for it to continue or force the app to quit entirely."

> snap-store
Gtk-Message: 17:44:36.251: Not loading module "atk-bridge": The functionality is provided by GTK natively. Please try to not load it.
Gdk-Message: 17:44:36.497: Unable to load  from the cursor theme
INFO snap-store: Logging to /home/{user}/snap/snap-store/1367/.local/share/snap-store/snap-store.log
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#f6400(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43740, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#87a8f(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43740, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#afa52(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43740, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#ff94b(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43740, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#a014b(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43740, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#4bb77(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43740, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#67808(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43740, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#4fd30(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43740, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#49eae(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43740, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#77065(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43746, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#30cef(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43746, details: null, rawResponse: null, trailers: {})
ERROR error_observer: Provider ratingsModelProvider:RatingsModelProvider#e128b(null) failed
    GrpcError: gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error connecting: SocketException: Connection refused (OS Error: Connection refused, errno = 111), address = ratings.ubuntu.com, port = 43760, details: null, rawResponse: null, trailers: {})

I also experience the same issue with the RustDesk remote desktop application.

> rustdesk
Try setting transparent
flutter: launch args: []
flutter: initializing FFI main
flutter: _appType:main,info1-id:079652093ce34d1ba82309e4efcdee2b,info2-name:Ubuntu,dir:/home/hiepld/Documents
flutter: _globalFFI init
flutter: registerEventHandler callback_query_onlines address book peer
flutter: registerEventHandler load_address_book_peers address book peer
flutter: registerEventHandler callback_query_onlines group peer
flutter: registerEventHandler load_group_peers group peer
flutter: registerEventHandler callback_query_onlines recent peer
flutter: registerEventHandler load_recent_peers recent peer
flutter: registerEventHandler callback_query_onlines fav peer
flutter: registerEventHandler load_fav_peers fav peer
flutter: registerEventHandler callback_query_onlines discovered peer
flutter: registerEventHandler load_lan_peers discovered peer
flutter: _globalFFI init end
flutter: registerEventHandler native_ui native_ui
flutter: registerEventHandler check_software_update_finish check_software_update_finish
flutter: registerEventHandler callback_query_onlines AllPeersLoader
flutter: restore lpos: 800.0/600.0, offset:0.0/0.0, isMaximized: false, isFullscreen: false
flutter: handled by uni links: false
flutter: [MultiWindowHandler] active window changed: {0}

This makes me suspect that I may have accidentally removed some library that these applications depend on. I've also noticed that this problem seems to affect mainly applications built with Flutter, while most other applications work normally, except that a few of them become laggy during certain operations, like the file picker example I mentioned.

Is there any way to diagnose and fix this problem without reinstalling Ubuntu? I have a lot of important data and would really prefer not to reinstall the operating system.

I have already tried uninstalling and reinstalling the affected applications, but the problem still persists.

I'm currently running Ubuntu server 26 LTS with Netplan setup during the install.

I changed the Netplan config to set Ethernet has the primary.

network:
  bonds:
    bond0:
      addresses:
      - 192.168.29.50/24

      interfaces:
      - enp7s0
      - wlp6s0

      nameservers:
        addresses:
        - 1.1.1.1
        - 1.0.0.1
        search: []

      parameters:
        mode: active-backup
        primary: enp7s0
        mii-monitor-interval: 1

      routes:
      - to: default
        via: 192.168.29.1

  ethernets:
    enp7s0:
    dhcp4: no

  version:2
  wifis:
    wlp6s0:
      dhcp4: no
      access-points:
        "SSID":
          password: 'pass'

Whenever i plugin Ethernet it detects and switches to Ethernet but my ssh and ping from the mac drops. Whenever i unplug Ethernet it switches to WiFi and the ssh comes back

On Ubuntu Unity 26.04, the touchpad moves, however it does not click or right-click. The touchpad model is "ETPS/2 Elantech Touchpad", and the laptop is a Lenovo 100e gen 1. It is using the synaptic driver, and switching to libinput has no effect. Libinput list-devices reports 'click method: none' for the touchpad. I have tried unloading and reloading the psmouse kernel module, however that only led to it left-clicking once then holding regardless of input. The issue also effects my external USB mouse.

Has any one tried installing GPIB drivers using kernel config? The Linux GPIB project states that we can install GPIB for newer kernels using kernel config. But when I tried my system broke. I tried it Ubuntu 24LTS and 26LTS.

How I got there: I don't have a precise idea, I think it is a problem with updates. First I had problem with Alsa mixer. My sound didnt work when I wanted to watch a video. Each time I needed to reload alsa for the computer to emit sound. After I have some updates to do, the computer would shut down and I had to turn it back on, but no update was installed and it asked again every time I turned on the PC. This must have been going on for about two months. 5days ago it shut down and I can no longer exit the console screen when I turn on the PC. I can log in.

I'm a noob on Ubuntu, I don't understand and know a lot and how it works so I searched but found nothing to help me.

I want to return to the graphic screen, I think my data is dead but I would prefer to keep it if possible.

I am currently stuck on the console or tty screen. So I tried many commands to exit:

• CTRL + ALT + Fx

  (where x is between 1 to 12) it should work but no, I just change of screen but I don't quit.

• startx

  but that just gave an error:

Oh shoot ! Something went wrong. A problem has occurred and the system cannot recover. Log out and try again.

It doesn't work. Then:

X.Org X Server 1.21.1.11 
X Protocol Version 11, Revision 0
Current Operating System: Linux \[*PC characteristics, huge numbers and hour*\]
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.17.0-23-generic root=UUID=8badbb6b-ce79-499b-adc6-9c18032b1f7 ro quiet splash vt.handoff=7
xorg-server 2.21.1.12-1ubuntu1.5 (For tecjnical support please see https://www.ubuntu.com/support) 
Current version of pixman: 0.42.2
Markers: (--) probeb, (\*\*) from config files, (II) informational, (WW) warning, (==) default setting, *this is an explanation for what follows, I don't wrote everything.*
(==) Log files: "/home/scrat/.local/share/worg/Xorg.0.log", Time: Fri Jun 26 00:55:06 2026
(==) Using system co.fig directory "/usr/share/X11/xorg.conf.d"
waiting for X server to shut down (II) Server terminated successfully (0). Closing log.file.Errors from xkbcomp are not fatal to the X serverxinit: connection to X server

I didn't find their contact. I have an Ubuntu account.

• CTRL + ALT + FN + F3

  there is just a black screen now. I shut down with the button and it says

[       73.838956] snd_soc_avs 0000:00:0e.0: invalid firmware data:    -22

[       73.838970] snd_soc_avs 0000:00:0e.0: firmware boot failed: -22

[       73.838975] snd_soc_avs 0000:00:0e.0: PM: dpm_run_callback(): pci_pm_resume returns -22

[       73.838990] snd_soc_avs 0000:00:0e.0: PM: failed to resume: error -22

[       73.890626] ish-hid {33AECD58-B679-4E54-9BD9-AO4D34FORD34FOC226}: wait for resume timed out

Thank you

My laptop is new hp Omnibook 3. I just installed Ubuntu 26.04 and noticed that after sleep mode, it cannot see any wifi networks at all. I have to reboot the laptop to be able to connect again.

I have tried to disable wifi.powersave using this post without luck.

Here's the thing, I recently replace my phone and somehow termius can't run on background. So can I ssh to my router and send command via ssh to my laptop so my phone can disconnect and my computer still running the command and using my router as an anchor?

I would like to install Ubuntu 26.04 LTS on a SSD using full disk encryption and using the following partitions. How would I accomplish this?

Partition 1
Size    Format  Mount Point     Description
1.0 GB  FAT     /boot/efi       EFI System

Partition 2
Size    Format  Mount Point     Description
2.0 GB  Ext4        /boot           Extended Boot Partition

Partition 3
Size    Format  Mount Point     Description
100 GB  Ext4/       /           Filesystem Root
        LVM

Partition 4
Size    Format  Mount Point     Description
126 GB  Ext4/       /home           Personal User Home Directories
        LVM

Free Space
16 GB   free space

this is the only info i can give

zig met uitpakken van ssh-import-id (5.11-0ubuntu3) over (5.11-0ubuntu2.24.04.1) ...
Voorheen niet geselecteerd pakket sysbench wordt geselecteerd.
Uitpakken van .../1354-sysbench_1.0.20+ds-7build1_amd64.deb wordt voorbereid...
Bezig met uitpakken van sysbench (1.0.20+ds-7build1) ...
Uitpakken van .../1355-xbrlapi_6.7-1ubuntu3_amd64.deb wordt voorbereid...
Bezig met uitpakken van xbrlapi (6.7-1ubuntu3) over (6.6-4ubuntu5) ...
Fouten gevonden tijdens verwerken van:
 /tmp/apt-dpkg-install-NCP10T/1094-linux-modules-6.17.0-35-generic_6.17.0-35.35\_amd64.deb
 /tmp/apt-dpkg-install-NCP10T/1106-linux-modules-6.17.0-29-generic_6.17.0-29.29\_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

luuk@luuk-750XGK:\~$ sudo apt upgrade -y

bash: /usr/bin/sudo: Bestand of map bestaat niet

luuk@luuk-750XGK:\~$ ls -l /usr/bin/sud

ls: cannot access '/usr/bin/sud': No such file or directory

luuk@luuk-750XGK:\~$ ls -l /usr/bin/sudo

ls: cannot access '/usr/bin/sudo': No such file or directory

so uhm yeah sudo is gone how do i fix this

EDIT: This is a straightup misintepretation of what nomodeset does (see comments). I'm leaving it up for reference, but mods, do what you will.

This is a follow-on to this question. I discovered in the course of that investigation that on a machine with an Nvidia Quadro K1100M GPU running a fresh install of 26.04 (no relevant testing yet to expand that case to other hardware/Ubuntu versions), running the following to turn off the grub splash screen and instead display full startup output, which should have nothing to do with the startup process beyond output display, actually breaks the chain of logic that allows hardware display drivers to load correctly:

# make sure grub shows the full startup sequence
sudo sed -i 's/quiet splash/nomodeset/' /etc/default/grub
sudo update-grub

Some relevant output from glxinfo (available from mesa-utils) demonstrates this. On a fresh ("working") installation:

> glxinfo | grep "OpenGL renderer"
OpenGL renderer string: Mesa Intel(R) HD Graphics 4600 (HSW GT2)

On a broken install (after turning off startup splash):

> glxinfo | grep "OpenGL renderer"
OpenGL renderer string: llvmpipe (LLVM 21.1.8, 256 bits)

I can switch between "broken" and "working" at will by updating /etc/default/grub as above and restarting.

So in the broken state we're using only the software renderer and not any hardware (onboard graphics being the renderer used on the fresh install). Per the referenced question, this is not our ideal state, but that isn't relevant to this question, which is specifically about why configuring grub's display properties would break hardware display driver functionality.

Also, the differing lines plus context from sudo lshw -c video output from the referenced question. Working:

  *-display
       ...
       product: GK107GLM [Quadro K1100M]
       ...
       logical name: /dev/fb1
       ...
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom fb
       configuration: depth=32 driver=nouveau latency=0 mode=1920x1080 resolution=1920,1080 visual=truecolor xres=1920 yres=1080
       resources: irq:47 memory:f4000000-f4ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:e000(size=128) memory:f5000000-f507ffff
  *-display
       ...
       product: 4th Gen Core Processor Integrated Graphics Controller
       ...
       capabilities: msi pm vga_controller bus_master cap_list rom fb
       configuration: depth=32 driver=i915 latency=0 mode=1920x1080 resolution=1920,1080 visual=truecolor xres=1920 yres=1080
       resources: irq:48 memory:f5400000-f57fffff memory:d0000000-dfffffff ioport:f000(size=64) memory:c0000-dffff

Broken:

  *-display UNCLAIMED
       ...
       product: GK107GLM [Quadro K1100M]
       ...
       capabilities: pm msi pciexpress vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:f4000000-f4ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:e000(size=128) memory:f5000000-f507ffff
  *-display
       ...
       product: 4th Gen Core Processor Integrated Graphics Controller
       ...
       capabilities: msi pm vga_controller bus_master cap_list fb
       configuration: depth=32 latency=0 mode=1920x1080 resolution=1920,1080 visual=truecolor xres=1920 yres=1080
       resources: memory:f5400000-f57fffff memory:d0000000-dfffffff ioport:f000(size=64) memory:c0000-dffff

My laptop has sound, when I play a song from Windows it does, but there is no sound from Ubuntu, and today I reinstalled Ubuntu from scratch and uninstalled Windows.

Specs:

• Firmware version: X13ATE.E.L3B256.2Z9.12D.XMC.R2S1E2P0S0T0W6F0.BC.Int
• OS Name: Ubuntu 26.04 LTS
• Kernel Version: Linux 7.0.0-22-generic
• Gnome version: 50
• Memory: 12 GB
• Disk Capacity: 256.1 GB
• Processor: Intel Pentium N4200 × 4
• OS Type: 64-bit

TL;DR: Yes.

After lot of wrapping my head around things and discovering my blunder with nomodeset, it seems that what's actually happening is everything works out of the box after all. The only missing piece is actually selecting the Quadro for use. This can be done by setting DRI_PRIME=1 in an application's environment. See this answer.

However, I'm still not quite satisfied, because I want the Quadro in use for most everything. I can export the variable in my shell rc file easily enough, but editing all of my application shortcuts is a pain. So I guess one last update: Does anyone know of a way to make the nouveau driver the default? Note that prime-select provided by the nvidia-prime package functions, but has no actual effect.

I am setting up an older machine with an Nvidia Quadro K1100M. After installing 26.04, one of the first things I confirmed was that I could connect multiple monitors, and sure enough, it worked out of the box with no issues.

Fast-forward to me doing a bunch of installation and configuration (i.e. running my clunky install script and taking a few manual steps), when I notice that I can no longer connect multiple monitors. Here's some relevant output:

> xrandr
Screen 0: minimum 16 x 16, current 1920 x 1080, maximum 32767 x 32767
None-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 508mm x 285mm
   1920x1080     59.96*+
   1440x1080     59.99  
   1400x1050     59.98  
   1280x1024     59.89  
   1280x960      59.94  
   1152x864      59.96  
   1024x768      59.92  
   800x600       59.86  
   640x480       59.38  
   320x240       59.29  
   1680x1050     59.95  
   1440x900      59.89  
   1280x800      59.81  
   1152x720      59.97  
   960x600       59.63  
   928x580       59.88  
   800x500       59.50  
   768x480       59.90  
   720x480       59.71  
   640x400       59.95  
   320x200       58.14  
   1600x900      59.95  
   1368x768      59.88  
   1280x720      59.86  
   1024x576      59.90  
   864x486       59.92  
   720x400       59.27  
   640x350       59.28  

> sudo lshw -c video
  *-display UNCLAIMED
       description: VGA compatible controller
       product: GK107GLM [Quadro K1100M]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:f4000000-f4ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:e000(size=128) memory:f5000000-f507ffff
  *-display
       description: VGA compatible controller
       product: 4th Gen Core Processor Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       logical name: /dev/fb0
       version: 06
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list fb
       configuration: depth=32 latency=0 mode=1920x1080 resolution=1920,1080 visual=truecolor xres=1920 yres=1080
       resources: memory:f5400000-f57fffff memory:d0000000-dfffffff ioport:f000(size=64) memory:c0000-dffff

The xrandr output is when external monitor(s) are connected. Any configuration of how many monitors/which ports they connect to makes no difference. Unfortunately, I did not record this output after a fresh installation, so I don't have that for comparison. UPDATE: I realized I can easily boot from USB to gather this output. I've added it at the end of the post.

So there's no driver installed for the GPU, and the OS doesn't see any displays that I connect to the machine. Can anyone shed any light on what might have changed? I really don't want to start over from a fresh installation, and even if I do, there's no guarantee I won't end right back here.

Some more details about drivers:

• ubuntu-drivers list produces no output.

• Nvidia recommends 418.113. but if I try to run the installer, it fails to build with a bunch of errors about missing header files, e.g. nv-misc.h. I had previously tried using the Additional Drivers dialog on a 24.10 installation to install I believe it was 390.x, but the result was the same.

• The nvidia-legacy PPA doesn't appear to have 390 past mantic. When I was trying this on 24.10, I had pretty much concluded that I was going to need to downgrade to an earlier LTS to get it to work, until I tried 26.04 and it magically worked out of the box (until it magically didn't, hence this post).

• Nouveau supports my GPU. My theory is that it claimed the GPU out of the box, which is why multiple monitors were briefly working, but then later dropped it for unknown reasons. Here is the output of lsmod | grep nouveau:

nouveau              3178496  0
gpu_sched              69632  1 nouveau
drm_gpuvm              57344  1 nouveau
mxm_wmi                12288  1 nouveau
drm_ttm_helper         20480  1 nouveau
drm_exec               12288  2 drm_gpuvm,nouveau
ttm                   135168  2 drm_ttm_helper,nouveau
drm_display_helper    303104  1 nouveau
i2c_algo_bit           16384  1 nouveau
video                  77824  3 dell_wmi,dell_laptop,nouveau
wmi                    36864  8 video,dell_wmi,wmi_bmof,dell_smm_hwmon,dell_smbios,dell_wmi_descriptor,mxm_wmi,nouveau

UPDATE: As mentioned above, we can gather output from a working setup on the same machine by booting the installation materials from USB. Here's more lshw output demonstrating that the GPU is correctly using nouveau. I've elided the xrandr output, but it's what you'd expect.

> sudo lshw -c video
  *-display
       description: VGA compatible controller
       product: GK107GLM [Quadro K1100M]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: /dev/fb1
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom fb
       configuration: depth=32 driver=nouveau latency=0 mode=1920x1080 resolution=1920,1080 visual=truecolor xres=1920 yres=1080
       resources: irq:47 memory:f4000000-f4ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:e000(size=128) memory:f5000000-f507ffff
  *-display
       description: VGA compatible controller
       product: 4th Gen Core Processor Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       logical name: /dev/fb0
       version: 06
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom fb
       configuration: depth=32 driver=i915 latency=0 mode=1920x1080 resolution=1920,1080 visual=truecolor xres=1920 yres=1080
       resources: irq:48 memory:f5400000-f57fffff memory:d0000000-dfffffff ioport:f000(size=64) memory:c0000-dffff

UPDATE 2: Okay, so started over and ran my install script only. After a restart, the problem was still there.

Then I ran it section by section with a restart in-between, and I found the culprit:

# make sure grub shows the full startup sequence
sudo sed -i 's/quiet splash/nomodeset/' /etc/default/grub
sudo update-grub

So apparently turning off the startup splash screen breaks something in the chain of logic that allows hardware display drivers to load correctly. This is wildly unexpected but nonetheless true. I'll probably ask separately why that might be.

I should probably note that I hadn't inspected glxinfo (available from mesa-utils) output before asking the question. There's actually a key nugget to be found there. Fresh install:

> glxinfo | grep "OpenGL renderer"
OpenGL renderer string: Mesa Intel(R) HD Graphics 4600 (HSW GT2)

Broken install (after turning off startup splash):

> glxinfo | grep "OpenGL renderer"
OpenGL renderer string: llvmpipe (LLVM 21.1.8, 256 bits)

So in the broken state we're actually using the software renderer and not the onboard graphics as I had previously assumed.

However, we also find that it still isn't using the Quadro in the "working" (multiple monitors-supported) state. I know prime-select is the tool to use to switch renderers when one has the Nvidia drivers installed, but it's as yet unclear if I can find and use a standalone version of it, or if I need to find another method.

UPDATE 3: nomodeset is doing what it's supposed to do, so that's entirely user error. Getting the Quadro selected is still pending.

My Lenovo ThinkPad x1 Carbon Gen 9, is connected to the ThinkPad docking station (https://support.lenovo.com/gb/en/solutions/PD500180) via USB-C. I've installed Synaptic repository and installed Displaylink driver, this is confirmed at the newest version.

I have 2 Full HD monitors connected to the docking station via HDMI cable and this set up works on a Windows 11 device used for work, an old HP Elitebook running Mint (I can't remember version of the top of my head).

I've gone through a lot of suggested fixes online, including:

• Changing boot settings
• Disabling PCIe tunneling
• Locked boot order (Ubuntu first, NVMe, USB listed in the order (should these be excluded)
• Turned off UEFI BIOS updates
• Used the ThinkPad emergency reset hole
• Turned of IPV4 and IPV6 network stack
• Intel AMT off
• memory protection off
• kernel DMA protection off
• Secure boot off
• USB docking station (40AF) firmware up to date
• updated all firmware with 'fwupdmgr'

The next thing I am trying is another wipe of the device + new Ubuntu 24.04 boot - edit this did not fix the issue.

Edit 25/0 - fwupdmgr reveals no available firmware updates.

Output from xrandr when docking station connected:

Screen 0: minimum 16 x 16, current 1920 x 1200, maximum 32767 x 32767
eDP-1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 300mm x 190mm
   1920x1200     59.88*+
   1600x1200     59.87
   1440x1080     59.99
   1400x1050     59.98
   1280x1024     59.89
   1280x960      59.94
   1152x864      59.96
   1024x768      59.92
   800x600       59.86
   640x480       59.38
   320x240       59.52
   1680x1050     59.95
   1440x900      59.89
   1280x800      59.81
   1152x720      59.97
   960x600       59.63
   928x580       59.88
   800x500       59.50
   768x480       59.90
   720x480       59.71
   640x400       59.95
   320x200       58.96
   1920x1080     59.96
   1600x900      59.95
   1368x768      59.88
   1280x720      59.86
   1024x576      59.90
   864x486       59.92
   720x400       59.55
   640x350       59.77

System details:

I can also provide clearer information if needed.

This app called Software Install, named gnome-software-local-file-flatpak (also sometimes shows up as just Software, named org.gnome.Software) autostarts at login and keeps running in the background.

It is different from App Center snap-store which comes preinstalled. I had to download Software Install from apt (probably came as gnome-software or something), and I used it to install flatpaks (also supports snaps after I turned that setting on) keeps running in the background

How do I stop Software Install / Software from running in the background? I'm using Ubuntu LTS 26.04 with GNOME 50.

Things I've already tried to no avail:

1. Turned off automatic updates, show search results from application settings
2. Turned off startup at login from System Settings > App Permissions
3. "masked" some service from Terminal following some online results, but it shows that "such a service doesn't exist, creating one". If it is worthwhile to detail this step, let me know as a comment and I'll do it.
4. Following this answer, could not delete NoDisplay=True from /etc/xdg/autostart/gnome-software-service.desktop because no such file exists.

I followed the same steps on 26.04 for overlayroot that I used on 24.04 and it doesn't work.

sudo apt-get install overlayroot  
sudo nano /etc/overlayroot.conf  

set overlayroot="" to overlayroot="tmpfs"

write out

df -h shows /dev/sda2 is still being mounted on / when it should be mounted in a write protected state. Any changes made do persist between restarts.

How can I get this to work properly?

I am running Ubuntu 24.04.4 on a ThinkPad T14s. I am having trouble connecting to the Eduroam WiFi network at my school on Ubuntu. When I try to connect, it takes a long time and usually only connects after multiple attempts. Sometimes it fails several times before finally connecting.

I do not have this issue with other WiFi networks. They connect quickly and work normally. The problem only happens with eduroam.

Here is the Eduroam security configuration that shows the security configuration I am using for Eduroam.

Has anyone experienced this issue before or knows what might be causing the slow connection and repeated connection attempts?

I can't get horizontal scroll of Logitech MX Master 3 to work via Remmina. Scrolling works in the host Ubuntu, but nothing happens via Remmina in Windows 11. It's like the events won't even be sent to Windows.

How to fix this?

I'm on Ubuntu 24.04 LTS. The Windows 11 is running locally as qemu guest, and I have Remmina 1.4.35. And yes, I also have Solaar here in Ubuntu.

I am doing a study to see how time is being synchronized in Ubuntu 22.04. As any systemd controled system, the service is using systemd-timesyncd.

According to the documentation, when starting, systemd-timesyncd will read the configuration file from /etc/systemd/timesyncd.conf.

It can't be /etc/systemd/timesyncd.conf because all the values in it are commented:

#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it under the
#  terms of the GNU Lesser General Public License as published by the Free
#  Software Foundation; either version 2.1 of the License, or (at your option)
#  any later version.
#
# Entries in this file show the compile time defaults. Local configuration
# should be created by either modifying this file, or by creating "drop-ins" in
# the timesyncd.conf.d/ subdirectory. The latter is generally recommended.
# Defaults can be restored by simply deleting this file and all drop-ins.
#
# See timesyncd.conf(5) for details.

[Time]
#NTP=
#FallbackNTP=ntp.ubuntu.com
#RootDistanceMaxSec=5
#PollIntervalMinSec=32
#PollIntervalMaxSec=2048

Everything is commented out, but when i interogate timedatectl i can see values for npt an such. For For the love of god i can't understand how timesync is geting it's values.

># timedatectl show-timesync
FallbackNTPServers=ntp.ubuntu.com
ServerName=ntp.ubuntu.com
ServerAddress=185.125.190.56
RootDistanceMaxUSec=5s
PollIntervalMinUSec=32s
PollIntervalMaxUSec=34min 8s
PollIntervalUSec=32s
NTPMessage={ Leap=0, Version=4, Mode=4, Stratum=2, Precision=-25, RootDelay=1.129ms, RootDispersion=213us, Reference=11FD1CFD, OriginateTimestamp=Fri 2024-11-29 21:22:30 GMT, ReceiveTimestamp=Fri 2024-11-29 21:22:33 GMT, TransmitTimestamp=Fri 2024-11-29 21:22:33 GMT, DestinationTimestamp=Fri 2024-11-29 21:22:30 GMT, Ignored=no PacketCount=656, Jitter=252.712ms }

The rest of the mentioned conf files do not exist as far as i can tell.
Any idea before I go crazy?

I try to customize storage layout in user-data for autoinstall here is part of my user-data

  storage:
    #layout:
    #  name: direct
    config:
      - type: disk
        match:
          size: largest
          #ssd: true
        id: ssd0
        ptable: gpt
        wipe: superblock
      - type: partition # create partitions on ssd0
        number: 1
        id: efi-partition
        device: ssd0
        size: 256M
        flag: boot        # uefi partition needs boot flag
        grub_device: true # and must be the grub device?
      - type: partition
        number: 2
        id: boot-partition
        device: ssd0
        size: 768M
      - type: partition
        number: 3
        id: root-partition
        device: ssd0
        size: -1
      - type: format # format partitions on ssd0
        id: efi-format
        volume: efi-partition
        fstype: fat32 # ESP gets FAT32
        label: ESP
      - type: format
        id: boot-format
        volume: boot-partition
        fstype: ext4
        label: BOOT
      - type: format
        id: root-format
        volume: root-partition
        fstype: ext4 # / (root) gets ext4, xfs, btrfs
        label: ROOT
      - type: mount # mount formatted partitions on ssd0
        id: root-mount # / (root) gets mounted first
        device: root-format
        path: /
      - type: mount
        id: boot-mount # /boot gets mounted next
        device: boot-format
        path: /boot
      - type: mount
        id: efi-mount # /boot/efi gets mounted next
        device: efi-format
        path: /boot/efi

then I got this error during the installation

"autoinstall config did not create needed bootloader partition"

I am really frustrated with this "autoinstller" ...

my USB detected by PC but PC doesn't show it.
other USBs work well, but this one no. This USB works, but I do not know what I did wrong that the PC did not show it anymore. I was trying to make it bootable in water to install Windows.

The result of lsblk for USB is (7.2G):

loop0      7:0    0  10.2M  1 loop /snap/canonical-livepatch/10
loop1      7:1    0     4K  1 loop /snap/bare/5
loop2      7:2    0  10.2M  1 loop /snap/canonical-livepatch/10
loop3      7:3    0 142.7M  1 loop /snap/chromium/1732
loop4      7:4    0 142.8M  1 loop /snap/chromium/1753
loop5      7:5    0 208.4M  1 loop /snap/code/74
loop6      7:6    0  99.4M  1 loop /snap/core/11420
loop7      7:7    0  99.4M  1 loop /snap/core/11606
loop8      7:8    0  55.5M  1 loop /snap/core18/2074
loop9      7:9    0  55.4M  1 loop /snap/core18/2128
loop10     7:10   0  61.8M  1 loop /snap/core20/1081
loop11     7:11   0 208.4M  1 loop /snap/code/75
loop12     7:12   0   219M  1 loop /snap/gnome-3-34-1804/72
loop13     7:13   0 164.8M  1 loop /snap/gnome-3-28-1804/161
loop14     7:14   0   219M  1 loop /snap/gnome-3-34-1804/66
loop15     7:15   0   319M  1 loop /snap/kde-frameworks-5-qt-5-
loop16     7:16   0 207.1M  1 loop /snap/pinta/12
loop17     7:17   0 204.5M  1 loop /snap/pinta/11
loop18     7:18   0  65.1M  1 loop /snap/gtk-common-themes/1515
loop19     7:19   0 362.3M  1 loop /snap/qt513/24
loop20     7:20   0  65.2M  1 loop /snap/gtk-common-themes/1519
loop21     7:21   0 251.6M  1 loop /snap/qt513/23
loop22     7:22   0 295.6M  1 loop /snap/vlc/2288
loop23     7:23   0 295.7M  1 loop /snap/vlc/2344
loop24     7:24   0 162.9M  1 loop /snap/gnome-3-28-1804/145
loop25     7:25   0    51M  1 loop /snap/snap-store/547
loop26     7:26   0   319M  1 loop /snap/kde-frameworks-5-qt-5-
loop27     7:27   0  32.3M  1 loop /snap/snapd/12883
loop28     7:28   0  32.3M  1 loop /snap/snapd/13170
loop29     7:29   0  17.6M  1 loop /snap/whatsie/48
loop30     7:30   0  14.3M  1 loop /snap/whatsie/46
loop31     7:31   0    51M  1 loop /snap/snap-store/542
sda        8:0    0 931.5G  0 disk 
├─sda1     8:1    0   512M  0 part /boot/efi
└─sda2     8:2    0   931G  0 part /
sdb        8:16   1   7.2G  0 disk 
sr0       11:0    1  1024M  0 rom

I think this link also had a problem with me, but I can't edit the mount option. I tried to format the USB, but it doesn't allow me to format it:

On a Ubuntu Server LTS 20.x, with renderer : networkd, LAN / WAN Connectivity are all properly fucntional. However in Cockpit > Software Updates, it gives the error message:

Loading available updates failed    
Cannot refresh cache whilst offline    

Changing the setting to renderer : NetworkManager
makes Cockpit > Software Updates work flawlessly without impacting the Networking module in Cockpit.

But I would rather stick to renderer : networkd as this is a Server.

Any insight to get renderer : networkd to work ? Or Cockpit just 'needs' NetworkManager ?

Note:

sudo systemctl stop network-manager.service    
sudo systemctl disable network-manager.service     

Will make the Networking module in cockpit fail with error :

Network devices and graphs require NetworkManager

JPEG XL (.jxl) is the next-generation, general-purpose image compression codec by the JPEG committee (more info you can find on jpegxl.info). Which apps/programs can open and convert it?

It seems the journal files in my Ubuntu 18 LTS server are not compressed despite compression is enabled by default (I did not change it in /etc/systemd/journald.conf) and journalctl claims to see compressed files:

# journalctl --header | grep PRESS | uniq
Incompatible Flags: COMPRESSED-LZ4

# journalctl --disk-usage
Archived and active journals take up 4.0G in the file system.

# journalctl -o verbose | wc
4 GB in 90 Mio lines  # about the same size as the journal files itself

# journalctl -o verbose | gzip | wc -c
193 MB  # reduced by a factor of 20

grep -v '^#' /etc/systemd/journald.conf
[Journal]
Storage=persistent
SystemMaxUse=4G
SystemKeepFree=4G
SystemMaxFileSize=100M
MaxFileSec=1week
SyncIntervalSec=1
LineMax=1K
ForwardToConsole=yes
MaxLevelConsole=crit
MaxLevelWall=alert
RateLimitIntervalSec=2min
RateLimitBurst=2000

When I try to compress one of the /var/log/journal/*/*.journal files I see a reduction by a factor of 5 while I know that already compressed data cannot be compressed by another compressor, so these files seem to be uncompressed.

How can I get systemd-journald to compress my journal ?

I rent a VPS from Contabo for about half a year now. It worked fine until now, because it started producing "Temporary failure in name resolution" errors. I read that this is a DNS error. I tried nameserver 8.8.8.8 and nameserver 1.1.1.1 but the problems are still here.

Yesterday I completely reinstalled the VPS, but it didn't work.

Results of /etc/resolv.conf:

# This file is managed by man:systemd-resolved(8). Do not edit.
#
# This is a dynamic resolv.conf file for connecting local clients to the
# internal DNS stub resolver of systemd-resolved. This file lists all
# configured search domains.
#
# Run "resolvectl status" to see details about the uplink DNS servers
# currently in use.
#
# Third party programs must not access this file directly, but only through the
# symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a different way,
# replace this symlink by a static file or a different symlink.
#
# See man:systemd-resolved.service(8) for details about the supported modes of
# operation for /etc/resolv.conf.

nameserver 127.0.0.53
options edns0
search invalid

Results of resolvectl status:

Global
       LLMNR setting: no                  
MulticastDNS setting: no                  
  DNSOverTLS setting: no                  
      DNSSEC setting: no                  
    DNSSEC supported: no                  
          DNSSEC NTA: 10.in-addr.arpa     
                      16.172.in-addr.arpa 
                      168.192.in-addr.arpa
                      17.172.in-addr.arpa 
                      18.172.in-addr.arpa 
                      19.172.in-addr.arpa 
                      20.172.in-addr.arpa 
                      21.172.in-addr.arpa 
                      22.172.in-addr.arpa 
                      23.172.in-addr.arpa 
                      24.172.in-addr.arpa 
                      25.172.in-addr.arpa 
                      26.172.in-addr.arpa 
                      27.172.in-addr.arpa 
                      28.172.in-addr.arpa 
                      29.172.in-addr.arpa 
                      30.172.in-addr.arpa 
                      31.172.in-addr.arpa 
                      corp                
                      d.f.ip6.arpa        
                      home                
                      internal            
                      intranet            
                      lan                 
                      local               
                      private             
                      test                

Link 2 (eth0)
      Current Scopes: DNS          
DefaultRoute setting: yes          
       LLMNR setting: yes          
MulticastDNS setting: no           
  DNSOverTLS setting: no           
      DNSSEC setting: no           
    DNSSEC supported: no           
  Current DNS Server: 213.136.95.11
         DNS Servers: 213.136.95.10
                      213.136.95.11
          DNS Domain: invalid 

Results of sudo systemctl status systemd-resolved.service:

● systemd-resolved.service - Network Name Resolution
     Loaded: loaded (/lib/systemd/system/systemd-resolved.service; enabled; vendor preset: enabled)
     Active: active (running) since Thu 2020-05-21 21:45:08 CEST; 1 day 14h ago
       Docs: man:systemd-resolved.service(8)
             https://www.freedesktop.org/wiki/Software/systemd/resolved
             https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
             https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
   Main PID: 460 (systemd-resolve)
     Status: "Processing requests..."
      Tasks: 1 (limit: 9487)
     Memory: 7.5M
     CGroup: /system.slice/systemd-resolved.service
             └─460 /lib/systemd/systemd-resolved

May 23 11:59:44 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
May 23 12:00:18 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
May 23 12:00:20 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
May 23 12:00:31 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
May 23 12:00:48 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
May 23 12:01:05 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
May 23 12:01:15 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
May 23 12:01:29 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
May 23 12:01:55 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
May 23 12:02:21 vmi329703.contaboserver.net systemd-resolved[460]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.

I have a Discord bot, and usually the problem comes up there.

A certain cellphone maker has changed the default format of taking pictures to HEIF (.HEIC, High Efficiency Image File Format), without asking the users (although there is still the option to use jpeg/jpg).

Is there an app/program on Ubuntu that can open and/or convert HEIF-pictures and even let them be edited?

It's an interesting problem I never saw before. The hard disk of this laptop has a harware problem (on a specific sector it got some problems).

That's why if I let Ubuntu installation to create the partitions, using the whole space, that fails.

However, if I create the partitions, without using the entire space, that passes (the partitions are created and it goes forward to installation).

I created the following partitions, on the 500GB hard drive:

• 100GB ext4, mount: /
• 2GB swap
• 1GB EFI

If I don't create the EFI partition, Grub fails to be installed. So, I saw that Ubuntu was going to create the EFI partition, by default, and I created it manually when selecting the Something else option.

The installation went well. It even displayed the alert saying that everything was successful.

But, when restarting the laptop, it doesn't boot from the HDD. I don't see the HDD option in the BIOS.

I tried to add it, but it asks me about the path for boot––which I have no idea what it is.

How to solve this? How can I get Ubuntu running on this laptop?

It doesn't have Secure Boot or anything similar in BIOS.

I have a live usb drive which I can use to access the hard drive, which works nicely.

I installed Ubuntu Linux on my Thinkpad T430 and everything works until last week. Because then I bought a new monitor with a higher screen resolution than full hd. So I cannot run the monitor with a higher resolution than 1920*1080.

The T430 is running with two graphic cards:

• Intel HD 4000
• Nvidia Quadro NVS 5400M

The notebook also allows running in "Optimus" mode.

I want to use the Thinkpad T430 and two monitors:

• one with FULL HD resolution on the VGA port
• and one with 2550x1400 resolution on the mini Display port

I tried these approaches:

Optimus mode = enabled In BIOS I enabled the Optimus mode (without bumblebee) and in Ubuntu 13.04 everything works, even both monitors get detected. But the problem is, the monitor connected to the mini display port (2550x1400) doesn't render the mouse courser correctly. It is laggy, so ALL mouse positions of the courser of the last 5 seconds are shown.

In this setup no extra software is installed, only the drivers delivered by ubuntu. This works so far the best. Only the mouse courser problem sucks. But I don't know what to do about that. Any suggestions?

Optimus mode = disabled, run only on Nvidia graphic card I installed Ubuntu 13.04 with only the Nvidia graphic card enabled. Works fine. But I can only run one monitor (which would be okay), but the max resolution was 1920*1080, even on the monitor with a higher default resolution.

Any suggestions to fix that?

Optimus mode=disabled/enabled, use Nvidia drivers I also tried installing the nvidia drivers via 'sudo apt-get install nvidia-current' but that did not work. After that the system does not boot anymore. Only a black screen is shown after boot loader. The system only boots if I enable optimus mode. I assume that the Intel graphic card is used in that case.

**bumblebee* I tried installing bumblebee with optimus mode=enabled. I got it installed, but it did not get the monitor on the mini display port detected. So it didn't work as I assumed it would.

I am not a linux expert and I am really stuck with this problem. Do you guys have any ideas or suggestions how I can get either the nvidia graphic card or the optimus mode running? I don't care if the battery is running out of energy very fast.

If you need anything else, please let me know. Thanks for your help.

I am fairly familiar with setting up servers, and ubuntu is generally my flavor of choice, but I just installed 12.04 desktop and I am seeing some behavior in network manager that is really puzzling. The network connection works fine if I leave it set on dhcp, but I would like a static IP address for my new web server. When I go into network manager and edit the connection for the one and only NIC I can select MANUAL from the dropdown menu but as soon as I do the Save button becomes greyed out. Even after filling out all fields for the connection it is still grey and I am unable to save the static IP connection information. Any thoughts would be greatly appreciated. I'm hoping there is just some new setting that I am unaware of....

On another note, if I stop the network manager and go edit the interfaces file (and the appropriate hosts/routes/dns files), I do get a static ip address assigned and I can contact my server from the outside, however, the server cannot find the internet. Can't ping even its own ip... I can ping the loopback interface though.

I'm really confused on this one. Hoping someone can offer some help.

I have FL studio 10 installed on my PC through wine and it works perfect. The pre-installed vst's work but any I install (sylenth1, nexus2 and pianoteq) don't work. I have massive installed and it works. I am a little new to Linux but know the basics.