removed nvidia driver and rebooted but seeing ‘Error parsing PCC subspaces from PCCT

Ah,.. trying to re-install cuda 10.0 and cudnn, I removed nvidia driver (using dpkg –purge nvidia-430′, and the OS seemed to make the kernel image at that time.
Then I gave ‘shutdown -r now’ command thinking the system will boot anyway.
The system is a supermicro computer with ubuntu 16.04 installed.
it takes very long (more than 10 minuites? but this was so before.. I think) and I see the GRUB window, and it goes to *Ubunut boot.
Then, I see this error message. What should I do?? enter image description here

ubuntu 19.04 wayland on Nvidia

Everywhere I google every article and stack question and forum post seems to imply that wayland ships with ubuntu 19.04 ready to be used.

The implication seems to be that you can log, out click on the cog/gear dropdown and select “Ubuntu” instead of “Ubuntu on” and this will log you in to wayland.

Here’s what really happens : you log out … there is no cog/gear icon, or anywhere else you can click.

After installing gnome-session-wayland and several reboots later, the login screen finally has a cog icon with two options : “Gnome on” and “Ubuntu” selecting “Ubuntu” (was my default session) and typing echo $ XDG_SESSION_TYPE into the terminal gives me “x11”. on “Gnome on”, the result is obviously the same.

Maybe this is pertinent : I’m on nvidia and have installed the nvidia drivers from sudo add-apt-repository ppa:graphics-drivers/ppa

What is a step-by-step guide to landing on a wayland desktop from a vanilla ubuntu 19.04 install on Nvidia?

Update : I found this :

I tried adding :

if [[ -z $  DISPLAY && $  (tty) == /dev/tty1 && $  XDG_SESSION_TYPE == tty ]]; then   XDG_SESSION_TYPE=wayland exec dbus-run-session gnome-session fi 

to my .profile and logged out and back in, this did nothing.

Update 2 :

it seems as if there is a problem with current nvidia driver. this would not explain the missing cog option though.

there has been no communiqué that I know of from Canonical about hiding this option untill the issue is resolved and I imagine it wouldn’t hide itself.

Completely unable to uninstall broken nvidia drivers :( [19.04 – KDE]

During an update, my nvidia drivers were completely broken and I’ve been unable to uninstall the broken ones and reinstall new ones. GPU is the Quadro K2100M (GK106GLM). Ubuntu version is 19.04 Machine is the Dell Precision M4800.

when I run ” sudo apt –purge autoremove nvidia* ” I get this ( )

When I run “apt –fix-broken install” I get this ( )

lsmod | grep nvidia returns this ( )

sudo ubuntu-drivers autoinstall returns this ( )

I’m at a loss, all tutorials I can find online referring to how to remove broken nvidia drivers doesn’t seem to be effective. Can anyone help? apt-autoremove hasn’t helped either 🙁 I have tried downloading the .run installer from nvidia’s site to no avil, claiming it cannot build the kernel module.

Thanks to the broken packages, I cannot apt install, apt remove, apt dist-upgrade, or anything of that sort :/

Edit: “sudo apt clean” and “sudo apt autoclean” have not helped

I deleted the etc/X11 folder and now the UI doesn’t work when I log with nvidia drivers installed

I was trying to change some configs of my GPU (Nvidia MX150) and I did something that made the screen freezes after login screen, so I deleted the folder with one of the files that I edited (xorg.conf), I thought if I delete this folder it was going to be rebuild somehow, but it doesn’t happen. Now I’m only able to use the UI when I purge nvidia drivers. How can I recover this folder?

I know that I did something really stupid, but I appreciate any tips you can give me.

Network Setup for an NVidia DGX-1?

We are trying to setup the network for an NVidia DGX 1 workstation.

We’ve connected a network cable that we know works (Tested it on another ubuntu laptop with no WIFI connected).

When we connect it to the DGX1 we don’t get an IP address and Firefox just shows the page “Hmm We’re having problems finding that site”.

Any ideas on how to get the network working?

Nvidia driver issue with Ubuntu 19.04 using Acer Aspire z5610

I would really appreciate your help in trying to configure my Nvidia-340 driver on an acer aspire z5610. I am a noob with linux but have picked up quite a lot over the last few days. Right now I feel like a dyslexic Neo throwing 1’s and 0’s at the screen tho. My brain is fried.

After a clean install everything looked good except that the resolution was 640px and i could not change it in the display settings. I followed advice about installing the nvidia drivers and after a reboot my screen flashed white, black, then bands of primary colours.

I rebooted into a root shell, and did a combination of purging, updating etc (i cant remember the order) and I got back to screen displayed with 640px.

I can see in the Alternative drivers GUI that i have drivers, the NVIDIA-340 and the Nouveau, but selecting either one makes no difference.

Also if i go to System/Nvidia X Server settings, again using the GUI interface then nothing is displayed in the popup window which should list the nvidia settings.

I don’t know if this is an issue, but I had to set ACPI=off to install as I have an old BIOS, as i have noticed some people say the driver issue is related to UEFI, however I have no such settings in my BIOS.

What I find strange is that when I tested Ubuntu Disco from the USB (with ACPI=off, otherwise it would not work) the screen displayed properly.

I am sorry for the rather jumbled explanation as to the changes I have made, and the order I have done them in. I am sure that you can remember what it was like as a noob finding searching for one issue leads to or creates 20 more!!!

I have taken pics on my phone of various errors along the way, such as

‘The repository does not have a release file’ (after apt-get update)

*-display UNCLAIMED (top line after sudo lshw -c display)

ERROR: missing module or file name (after I made a cup of tea!!!)

The instructions I have followed along the way seem to have worked for other people in forums like this.

I am happy to generate error reports and upload them if that could help. I am determined not to go back to Windows, which currently takes several moons to boot up.

Any and all help is appreciated. Kind Regards in advance.

Graphics get laggy with larger windows (likely Nvidia PRIME related)

I’m on Ubuntu 19.04 with a Nvidia GTX 1050 Mobile, using the latest nvidia-driver-430 from the ppa.

In the PRIME profile, I have selected Nvidia instead of Intel. It seems like this is acknowledged (OpenGL ES 3.0 Renderer: GeForce GTX 1050 with Max-Q Design/PCIe/SSE2). nvidia-smi also reports that the GPU is under load.

However, this is where it gets strange: The size of the window which renders 3D OpenGL graphics has a huge effect on performance. Most of the time (not always!) a window sized at 720p or below is as performant as I’d expect it to be, and the CPU load is minimal. However, resizing it to be larger causes everything (even the OS itself) becomes incredibly laggy due to the graphics processing load.

I think that somehow, Intel graphics are used with larger windows. The reason is that there is a major increase in CPU usage when this happens. nvidia-smi does still also show the GPU-Util at 100% and the program in the Processes tab though…

I’d really appreciate some help since the performance is really unbearable with full-screen windows.

Some more information:

  • I’m mainly noticing this as a big problem with the Godot engine
  • I’m booting with nomodeset due to having had problems otherwise

Nvidia drivers with Ubuntu 19.04

I’m facing a strange problem I can’t seem to work around.

My computer is set up with Ubuntu 19.04, with the 5.0.0-23 Linux headers and I seem to have problems installing the correct drivers for my Nvidia GTX1050.

When I purge all nvdia related packages, I manage to get a GUI but in a really small resolution (9650×540) on my laptop screen. If I plug in an external monitor in HDMI, I have the correct display on this new screen with a usual 1920*1080 resolution.

I’ve tried to install the nvidia-drivers with :

  • sudo ubuntu-drivers autoinstall
  • By installing the graphics-drivers ppa, and running sudo apt-get install nvidia-driver-430 which is the latest version supporting my graphics card

When rebooting after this installation, I don’t have any GUI showing up and I’m stuck with a black screen and terminal access.

I’ve tried setting lightdm as the default manager, or gdm3 and turning off Wayland in its conf, to no avail.

Does anyone have a clue for me ?

Triple Monitor, Dual nVidia Card 18.04 Hell

Here’s some backstory: Dual boot: Windows 10 on it’s own drive (working perfectly), Ubuntu 18.04 on it’s own drive. (So, dual drive/dual boot config) Grub 2 bootloader working as intended. Fresh install and config/update Ubuntu 18.04 LTS (so no previous crap to sift through).

3 monitors (40″, 2x 23″) 1920 x 1080 res. Two nVidia cards: (GeForce GTX 980ti & 660ti) driver ver. 430 (prop). 980ti runs the 40″ via HDMI to a reciever. (working properly) 660ti runs the 23″ via DVI. (this is where the problem begins)

This configuration works perfectly on Win 10. Problem only presents in Ubuntu 18.04. Not pointing fingers as I adore this distro and want to resolve this.

Everything works – surprisingly – except any life from the 660ti (which is detected) or my 23″ monitors (which are also detected, but disabled in xServer and WILL NOT display when enabled/applied). This was not an issue with Nouveau drivers, (Ubuntu display handled extended displays and worked as intented), but screen tearing and lag was. I have tried enabling and configuring my displays in xServer, but upon restart, I get a black screen, bootloop and my only fix is to wipe the drive and start again as recovery option does nothing.

I am reluctant to do much of anything with xServer right now without solid info regarding configuration, since I’m just happy that Ubuntu itself is booting and working. Getting my two other monitors working would be a HUGE plus.

Thank you in advance for any help and please don’t hesitate to ask more questions regarding my rig.