xorg does not use nvidia gpu on a I+N machine.

[Yuan-Chen Cheng]

SRU Request:

[Test Case]
1) Enable the -proposed repository, and install the new ubuntu-drivers-common (1:0.8.1.1).

2) Check that the dpkg-dev package is also installed.

3) Restart your computer, and see if everything works correctly when
accessing the desktop.

[Regression Potential]
Low. No code was changed, only a missing dependency was added to solve the problem.

__________
On a machine with I+N, I install with focal 20.04 image. I didn't turn on auto-login. I checked "install 3rd party driver" during installation. It does install Nvidia driver (440.82+really.440.64-0ubuntu6).

On first boot, I double check by run 'prime-select query'. It return nvidia.

run nvidia-smi, no program is using NV GPU.

---
$ glxinfo -B
name of display: :1
display: :1 screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Intel (0x8086)
    Device: Mesa Intel(R) UHD Graphics 630 (CFL GT2) (0x3e9b)
    Version: 20.0.4
    Accelerated: yes
    Video memory: 3072MB
    Unified memory: yes
    Preferred profile: core (0x1)
    Max core profile version: 4.6
    Max compat profile version: 4.6
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
OpenGL vendor string: Intel
OpenGL renderer string: Mesa Intel(R) UHD Graphics 630 (CFL GT2)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 20.0.4
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.6 (Compatibility Profile) Mesa 20.0.4
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile

OpenGL ES profile version string: OpenGL ES 3.2 Mesa 20.0.4
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
---

Run lsmod | grep nvidia, I got:

---
nvidia_uvm 970752 0
nvidia_drm 49152 0
nvidia_modeset 1114112 1 nvidia_drm
nvidia 20430848 8 nvidia_uvm,nvidia_modeset
drm_kms_helper 184320 2 nvidia_drm,i915
ipmi_msghandler 106496 2 ipmi_devintf,nvidia
drm 491520 11 drm_kms_helper,nvidia_drm,i915
---

I run

$ sudo prime-select intel
$ sudo prime-select nvidia
$ sudo reboot

After reboot, nothing changed.

However, previously, on the same machine, I once get it works. (nvidia-smi show some X related process use GPU, glxinfo -B show Nvidia). I remembered I create another admin account, and later on, I found it's fixed. I didn't remember what else exactly make it happened.
I re-installed again, and try to do more tests, can't fix it so far.

LP: #1875315 have all the log that it first fixed.
---

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 440.64 Fri Feb 21 01:17:26 UTC 2020
 GCC version:
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 27 18:58:04 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation UHD Graphics 630 (Mobile) [8086:3e9b] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Dell UHD Graphics 630 (Mobile) [1028:091a]
   Subsystem: Dell GP107GLM [Quadro P620] [1028:091a]
InstallationDate: Installed on 2020-04-27 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Dell Inc. Precision 3541
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-26-generic root=UUID=8c0e264c-f63c-4d5a-b85f-6faf4008b9e6 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/21/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.5.1
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.5.1:bd08/21/2019:svnDellInc.:pnPrecision3541:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr:
dmi.product.family: Precision
dmi.product.name: Precision 3541
dmi.product.sku: 091A
dmi.sys.vendor: Dell Inc.
nvidia-settings:
 ERROR: Unable to load info from any available system

 ERROR: Unable to load info from any available system
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

[Alberto Milone (albertomilone)]

Can you attach your /var/log/gpu-manager.log after reproducing the problem, please?

[Yuan-Chen Cheng (ycheng-twn)]

Here it is. Feel free if you need further log.

[Yuan-Chen Cheng (ycheng-twn)]

quick check the log, there is:

Is nvidia kernel module available? no

However, what installed is linux-modules-nvidia-440-5.4.0-26-generic, which install the nvidia.ko to /lib/modules/5.4.0-26-generic/kernel/nvidia-440/nvidia.ko instead of the directory that gpu-manager check, which is /lib/modules/%s/updates/dkms.

[Yuan-Chen Cheng (ycheng-twn)]

fix in https://github.com/tseliot/ubuntu-drivers-common/pull/44.

root cause: gpu-manager call dpkg-architecture that live in dpkg-dev, but it's not necessarily installed on the ubuntu that end-user installed.

[Yuan-Chen Cheng (ycheng-twn)]

For people who own a machine that does not have other GPU than Nvidia one, this bug is fatal.

[Alberto Milone (albertomilone)]

I have added the missing dependency, with no other change. Please accept the change into focal-proposed.

[Łukasz Zemczak (sil2100)]

Hello Yuan-Chen, or anyone else affected,

Accepted ubuntu-drivers-common into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/ubuntu-drivers-common/1:0.8.1.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-drivers-common - 1:0.8.3

---------------
ubuntu-drivers-common (1:0.8.3) groovy; urgency=medium

  * debian/control:
    - Replace build dependency on lib32gcc1 with lib32gcc-s1.

 -- Alberto Milone <email address hidden> Mon, 04 May 2020 16:21:39 +0200

[Yuan-Chen Cheng (ycheng-twn)]

Test procedure:

1. find a machine that have Intel + Nvidia GPU.
2. install stock focal 20.04 image => it's in Nvidia performance mode. but nvidia-smi show no app use GPU.
3. apt-get upgrade
4. turn on proposed channel
5. apt-get install ubuntu-drivers-common => it properly install v1:0.8.1.1 and dpkg-dev
6. reboot => still in Nvidia performance mode, and nvidia-smi show X Server and gnome-shell use Nvidia GPU resource.

Per 5, it test passed.
Per status change from 2 to 6, it fix the issue in the first place.

[Yuan-Chen Cheng (ycheng-twn)]

note that dependency of dpkg-dev (gcc, etc) will also be installed.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-drivers-common - 1:0.8.1.1

---------------
ubuntu-drivers-common (1:0.8.1.1) focal; urgency=medium

  * debian/control:
    - Depend on dpkg-dev (LP: #1875339).

 -- Alberto Milone <email address hidden> Mon, 04 May 2020 10:53:31 +0200

[Brian Murray (brian-murray)]

The verification of the Stable Release Update for ubuntu-drivers-common has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.