Can't keep brightness value after reboot/poweroff in some nvidia gfx

[hugh chao]

systemd-backlight saves the brightness value right before shutdown.target, however it doesn't work because the nvidia_0 backlight sysfs disappears after GFX device is closed by Xorg, long before shutdown.target.

[Impact]
System can not keep the brightness value, after reboot/poweroff the brightness will still be highest.

[Fix]
Suggested by Nvidia, we need to run nvidia-persistenced.service before systemd-backlight@backlight:nvidia_0.service

[Test Case]
Adjust the brightness value, reboot, the value must keep persistence during boots.

[Regression Risk]
Low, this fix is just adjust the systemd order more earier.

https://github.com/hugh712/nvidia-graphics-drivers

[hugh chao (hugh712)]

https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5

[Andy Whitcroft (apw)]

Hello hugh, or anyone else affected,

Accepted nvidia-graphics-drivers-455 into groovy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-455/455.45.01-0ubuntu0.20.10.1 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-groovy to verification-done-groovy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-groovy. 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.

[Andy Whitcroft (apw)]

Hello hugh, or anyone else affected,

Accepted nvidia-graphics-drivers-455 into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-455/455.45.01-0ubuntu0.20.04.1 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.

[Andy Whitcroft (apw)]

Hello hugh, or anyone else affected,

Accepted nvidia-graphics-drivers-455 into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-455/455.45.01-0ubuntu0.18.04.1 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-bionic to verification-done-bionic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-bionic. 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.

[hugh chao (hugh712)]

tried nvidia-graphics-drivers-455 in focal which can fix this issue, I didn't observe any regression.

[hugh chao (hugh712)]

tried nvidia-graphics-drivers-455 in groovy which can fix this issue, I didn't observe any regression.

[hugh chao (hugh712)]

tried nvidia-graphics-drivers-455 in bionic which can fix this issue, I didn't observe any regression.

[Lukas Waymann (meribold)]

We found that running `prime-select intel` on a machine without an integrated GPU results in the machine failing to boot. This could be considered user error, but it could also be considered a regression, because we didn't observe this behavior with driver version 455.38.

You can find our full test results at <https://docs.google.com/spreadsheets/d/19-dE4YIiIV5sfDkmN3le45nb7KLrLUMnbNTWeQiYBz8>.

[Alberto Milone (albertomilone)]

The reason why "prime-select intel" works on non-hybrid system does not depend on the driver. It has been missing a relevant check since we added support for AMD integrated cards.

[Andy Whitcroft (apw)]

The verification of the Stable Release Update for nvidia-graphics-drivers-455 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.

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-graphics-drivers-455 - 455.45.01-0ubuntu0.20.04.1

---------------
nvidia-graphics-drivers-455 (455.45.01-0ubuntu0.20.04.1) focal; urgency=medium

  * New upstream release (LP: #1904863):
    - Fixed a bug in a Vulkan blending optimization that could
      produce incorrect results. Some of the Vulkan titles affected
      by this bug were:
        Life is Strange 2
        Shadow of the Tomb Raider
    - Fixed an issue that caused Vulkan swapchain creation to fail
      for full-screen windows when a G-SYNC monitor is connected.

  [ Kai-Heng Feng ]
  * debian/71-nvidia.rules:
    - Add rules to enable runtimepm by default.

  [ Alberto Milone ]
  * debian/add-ids-to-json-db,
    debian/additional_runtimepm_ids,
    debian/rules:
    - Make it possible to add new IDs to mark support
      for runtimepm.
  * debian/templates/nvidia-compute-utils-flavour.nvidia-persistenced.service.in:
    - Run persistenced.service before systemd-backlight@backlight:nvidia_0
      (LP: #1885087).

 -- Alberto Milone <email address hidden> Thu, 19 Nov 2020 15:24:54 +0100

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-graphics-drivers-455 - 455.45.01-0ubuntu0.18.04.1

---------------
nvidia-graphics-drivers-455 (455.45.01-0ubuntu0.18.04.1) bionic; urgency=medium

  * New upstream release (LP: #1904863):
    - Fixed a bug in a Vulkan blending optimization that could
      produce incorrect results. Some of the Vulkan titles affected
      by this bug were:
        Life is Strange 2
        Shadow of the Tomb Raider
    - Fixed an issue that caused Vulkan swapchain creation to fail
      for full-screen windows when a G-SYNC monitor is connected.

  [ Kai-Heng Feng ]
  * debian/71-nvidia.rules:
    - Add rules to enable runtimepm by default.

  [ Alberto Milone ]
  * debian/add-ids-to-json-db,
    debian/additional_runtimepm_ids,
    debian/rules:
    - Make it possible to add new IDs to mark support
      for runtimepm.
  * debian/templates/nvidia-compute-utils-flavour.nvidia-persistenced.service.in:
    - Run persistenced.service before systemd-backlight@backlight:nvidia_0
      (LP: #1885087).

 -- Alberto Milone <email address hidden> Thu, 19 Nov 2020 15:31:58 +0100

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-graphics-drivers-455 - 455.45.01-0ubuntu0.20.10.1

---------------
nvidia-graphics-drivers-455 (455.45.01-0ubuntu0.20.10.1) groovy; urgency=medium

  * New upstream release (LP: #1904863):
    - Fixed a bug in a Vulkan blending optimization that could
      produce incorrect results. Some of the Vulkan titles affected
      by this bug were:
        Life is Strange 2
        Shadow of the Tomb Raider
    - Fixed an issue that caused Vulkan swapchain creation to fail
      for full-screen windows when a G-SYNC monitor is connected.

  [ Kai-Heng Feng ]
  * debian/71-nvidia.rules:
    - Add rules to enable runtimepm by default.

  [ Alberto Milone ]
  * debian/add-ids-to-json-db,
    debian/additional_runtimepm_ids,
    debian/rules:
    - Make it possible to add new IDs to mark support
      for runtimepm.
  * debian/templates/nvidia-compute-utils-flavour.nvidia-persistenced.service.in:
    - Run persistenced.service before systemd-backlight@backlight:nvidia_0
      (LP: #1885087).

 -- Alberto Milone <email address hidden> Thu, 19 Nov 2020 15:21:39 +0100

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-graphics-drivers-450 - 450.102.04-0ubuntu0.20.10.1

---------------
nvidia-graphics-drivers-450 (450.102.04-0ubuntu0.20.10.1) groovy; urgency=medium

  * New upstream release (LP: #1906680):
    - CVE-2021-1052, CVE-2021-1053.
  * debian/templates/control.in:
    - Add support for libcuda-11.0-1, libcuda-11.1-1.
  * debian/templates/nvidia-compute-utils-flavour.nvidia-persistenced.service.in:
    Run persistenced.service before systemd-backlight@backlight:nvidia_0
    (LP: #1885087).

 -- Alberto Milone <email address hidden> Mon, 04 Jan 2021 15:18:07 +0100

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-graphics-drivers-450 - 450.102.04-0ubuntu0.18.04.1

---------------
nvidia-graphics-drivers-450 (450.102.04-0ubuntu0.18.04.1) bionic; urgency=medium

  * New upstream release (LP: #1906680):
    - CVE-2021-1052, CVE-2021-1053.
  * debian/templates/nvidia-compute-utils-flavour.nvidia-persistenced.service.in:
    Run persistenced.service before systemd-backlight@backlight:nvidia_0
    (LP: #1885087).

 -- Alberto Milone <email address hidden> Mon, 04 Jan 2021 16:11:01 +0100

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-graphics-drivers-450 - 450.102.04-0ubuntu0.20.04.1

---------------
nvidia-graphics-drivers-450 (450.102.04-0ubuntu0.20.04.1) focal; urgency=medium

  * New upstream release (LP: #1906680):
    - CVE-2021-1052, CVE-2021-1053.
  * debian/templates/nvidia-compute-utils-flavour.nvidia-persistenced.service.in:
    Run persistenced.service before systemd-backlight@backlight:nvidia_0
    (LP: #1885087).

 -- Alberto Milone <email address hidden> Mon, 04 Jan 2021 15:47:43 +0100

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-graphics-drivers-450 - 450.102.04-0ubuntu1

---------------
nvidia-graphics-drivers-450 (450.102.04-0ubuntu1) hirsute; urgency=medium

  * New upstream release.
  * debian/templates/control.in:
    - Add support for libcuda-11.0-1, libcuda-11.1-1.
  * debian/templates/nvidia-compute-utils-flavour.nvidia-persistenced.service.in:
    Run persistenced.service before systemd-backlight@backlight:nvidia_0
    (LP: #1885087).
  * debian/templates/{dkms_nvidia.conf.in|dkms.conf.fragment.in}:
    - Disable uvm on Linux >= 5.10.

 -- Alberto Milone <email address hidden> Mon, 04 Jan 2021 15:18:07 +0100

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-graphics-drivers-455 - 455.45.01-0ubuntu1

---------------
nvidia-graphics-drivers-455 (455.45.01-0ubuntu1) hirsute; urgency=medium

  * New upstream release (LP: #1904863):
    - Fixed a bug in a Vulkan blending optimization that could
      produce incorrect results. Some of the Vulkan titles affected
      by this bug were:
        Life is Strange 2
        Shadow of the Tomb Raider
    - Fixed an issue that caused Vulkan swapchain creation to fail
      for full-screen windows when a G-SYNC monitor is connected.

  [ Kai-Heng Feng ]
  * debian/71-nvidia.rules:
    - Add rules to enable runtimepm by default.

  [ Alberto Milone ]
  * debian/add-ids-to-json-db,
    debian/additional_runtimepm_ids,
    debian/rules:
    - Make it possible to add new IDs to mark support
      for runtimepm.
  * debian/templates/nvidia-compute-utils-flavour.nvidia-persistenced.service.in:
    - Run persistenced.service before systemd-backlight@backlight:nvidia_0
      (LP: #1885087)

 -- Alberto Milone <email address hidden> Thu, 19 Nov 2020 14:23:18 +0100