| 2020-11-25 16:28:24 |
Kamal Mostafa |
bug |
|
|
added bug |
| 2020-11-25 16:28:24 |
Kamal Mostafa |
attachment added |
|
nvidia-bug-report.log.gz https://bugs.launchpad.net/bugs/1905591/+attachment/5437972/+files/nvidia-bug-report.log.gz |
|
| 2020-11-25 16:29:04 |
Kamal Mostafa |
description |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]
Updating to nvidia-driver-455 results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA).
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Note also that manually applying this has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
nvidia-driver-455: 455.38-0ubuntu0.18.04.1 |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]
Updating to nvidia-driver-455 results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA). Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Note also that manually applying this has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
nvidia-driver-455: 455.38-0ubuntu0.18.04.1 |
|
| 2020-11-25 16:29:52 |
Alberto Milone |
nvidia-graphics-drivers-455 (Ubuntu): status |
New |
Triaged |
|
| 2020-11-25 16:29:55 |
Alberto Milone |
nvidia-graphics-drivers-455 (Ubuntu): importance |
Undecided |
High |
|
| 2020-11-25 16:30:45 |
Kamal Mostafa |
description |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]
Updating to nvidia-driver-455 results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA). Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Note also that manually applying this has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
nvidia-driver-455: 455.38-0ubuntu0.18.04.1 |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]
Updating to nvidia-driver-455 results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA). Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
nvidia-driver-455: 455.38-0ubuntu0.18.04.1 |
|
| 2020-11-26 15:14:23 |
Alberto Milone |
bug |
|
|
added subscriber Daniel Dadap |
| 2020-12-09 15:32:59 |
Alex Tu |
bug task added |
|
oem-priority |
|
| 2020-12-09 15:33:09 |
Alex Tu |
oem-priority: importance |
Undecided |
High |
|
| 2020-12-20 21:59:01 |
Rex Tsai |
tags |
|
oem-priority |
|
| 2021-01-05 22:09:33 |
David Evans |
bug |
|
|
added subscriber David Evans |
| 2021-01-08 16:24:36 |
Kamal Mostafa |
summary |
no brightness control after update from 450 to 455 |
no brightness control in {455,460} after update from 450 |
|
| 2021-01-08 16:32:58 |
Kamal Mostafa |
description |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]
Updating to nvidia-driver-455 results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA). Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
nvidia-driver-455: 455.38-0ubuntu0.18.04.1 |
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile], and other laptop model(s):
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
|
| 2021-01-08 18:28:23 |
Kamal Mostafa |
description |
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile], and other laptop model(s):
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]:
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
*Note that 460 fixes it for Lenovo P73 per comment #6, but not for Lenovo X1 per comment #5.
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
|
| 2021-01-08 18:29:41 |
Kamal Mostafa |
description |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]:
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
*Note that 460 fixes it for Lenovo P73 per comment #6, but not for Lenovo X1 per comment #5.
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]:
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
*Note that 460 fixes it for a 20.04 Lenovo P73 per comment #6, but not for my 18.04.5 Lenovo X1 per comment #5.
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
|
| 2021-01-08 18:30:13 |
Kamal Mostafa |
description |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]:
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
*Note that 460 fixes it for a 20.04 Lenovo P73 per comment #6, but not for my 18.04.5 Lenovo X1 per comment #5.
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]:
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
*Note that 460 fixes it for a 20.04 ThinkPad P73 per comment #6, but not for my 18.04.5 Lenovo ThinkPad X1 per comment #5.
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
|
| 2021-01-08 18:30:39 |
Kamal Mostafa |
bug task added |
|
nvidia-graphics-drivers-460 (Ubuntu) |
|
| 2021-01-09 19:11:34 |
Launchpad Janitor |
nvidia-graphics-drivers-460 (Ubuntu): status |
New |
Confirmed |
|
| 2021-01-09 19:25:39 |
Goncalves-st |
attachment added |
|
nvidia-bug-report.log.gz https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-455/+bug/1905591/+attachment/5451331/+files/nvidia-bug-report.log.gz |
|
| 2021-01-10 14:58:14 |
Goncalves-st |
bug |
|
|
added subscriber Goncalves-st |
| 2021-01-10 22:16:06 |
SureShot |
nvidia-graphics-drivers-455 (Ubuntu): status |
Triaged |
In Progress |
|
| 2021-01-10 22:16:18 |
SureShot |
nvidia-graphics-drivers-455 (Ubuntu): status |
In Progress |
Confirmed |
|
| 2021-01-11 17:23:11 |
Kamal Mostafa |
description |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]:
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
*Note that 460 fixes it for a 20.04 ThinkPad P73 per comment #6, but not for my 18.04.5 Lenovo ThinkPad X1 per comment #5.
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]:
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
*WORKAROUND: See comment #11 (add nvidia drivers to initramfs).
*Note that 460 fixes it for a 20.04 ThinkPad P73 per comment #6, but not for my 18.04.5 Lenovo ThinkPad X1 per comment #5.
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
|
| 2021-01-15 18:21:26 |
pvdeynse |
bug |
|
|
added subscriber pvdeynse |
| 2021-01-27 17:57:00 |
Kamal Mostafa |
description |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]:
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
*WORKAROUND: See comment #11 (add nvidia drivers to initramfs).
*Note that 460 fixes it for a 20.04 ThinkPad P73 per comment #6, but not for my 18.04.5 Lenovo ThinkPad X1 per comment #5.
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
On my Lenovo X1 Extreme with GPU: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile]:
WORKS FINE:
nvidia-driver-450: 450.102.04-0ubuntu0.18.04.1
NO BRIGHTNESS CONTROL:
nvidia-driver-455: 455.38-0ubuntu0.18.04.1
nvidia-driver-460: 460.32.03-0ubuntu0.18.04.1
nvidia-driver-460: 460.39-0ubuntu0.18.04.1
*WORKAROUND: See comment #11 (add nvidia drivers to initramfs).
*Note that 460 fixes it for a 20.04 ThinkPad P73 per comment #6, but not for my 18.04.5 Lenovo ThinkPad X1 per comment #5.
Updating to nvidia-driver-455 (or -460) results in loss of brightness control. On boot, the laptop display brightness is somewhat less than fully bright and cannot be changed. The brightness up/down keys do pop up the gnome gui brightness widget, and /sys/class/backlight/nvidia_0/* values do change, but the actual display's brightness does not.
Problem occurs with either version of nvidia-driver-455 (the archive or the ~graphics-drivers/PPA) or any version of -460.
Normal functionality returns if I downgrade to any version of nvidia-driver-450.
Also observed: 455 and 460 temporarily display some pixel garbage while mode-switching during the graphic login sequence. Only a minor glitch, but note that 450 does not exhibit that issue either.
Note also that manually applying this to /lib/systemd/system/nvidia-persistenced.service has no effect on the problem:
https://github.com/hugh712/nvidia-graphics-drivers/commit/bccad5ee6444dd8c5c47ba19ea0232106a1086f5
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
|
| 2021-02-11 12:49:32 |
Hugo Laloge |
attachment added |
|
dmesg and Xorg.0.log before and after the fix. https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-455/+bug/1905591/+attachment/5462682/+files/XorgLogs.zip |
|
| 2021-04-14 06:24:23 |
JAVIER COBOS MESA |
bug |
|
|
added subscriber JAVIER COBOS MESA |
| 2021-04-14 06:33:19 |
Goncalves-st |
removed subscriber Goncalves-st |
|
|
|
| 2021-04-17 19:38:41 |
Reidotoxo |
bug |
|
|
added subscriber Reidotoxo |
| 2021-05-02 11:14:57 |
Peter |
bug |
|
|
added subscriber Peter |
| 2021-07-22 19:56:08 |
Kunal Zodape |
bug |
|
|
added subscriber Kunal Zodape |
| 2021-07-26 07:11:50 |
JAVIER COBOS MESA |
removed subscriber JAVIER COBOS MESA |
|
|
|
| 2021-09-14 19:09:05 |
Alen Masic |
oem-priority: status |
New |
Confirmed |
|
| 2021-09-14 19:15:08 |
Alen Masic |
oem-priority: status |
Confirmed |
New |
|
