* [Bug 110407] New: /sys/class/backlight/nv_backlight doesn't work on Dell Precision 7530 GP107GLM [Quadro P1000 Mobile]
@ 2019-04-12 5:56 bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
[not found] ` <bug-110407-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>
0 siblings, 1 reply; 5+ messages in thread
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2019-04-12 5:56 UTC (permalink / raw)
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
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https://bugs.freedesktop.org/show_bug.cgi?id=110407
Bug ID: 110407
Summary: /sys/class/backlight/nv_backlight doesn't work on Dell
Precision 7530 GP107GLM [Quadro P1000 Mobile]
Product: xorg
Version: unspecified
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: Driver/nouveau
Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Reporter: kai.heng.feng-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org
QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
This laptop has an BIOS option "Switchable Graphics". When the options is
selected, it behaves like a normal Optimus laptop. In this case, brightness
sysfs works since it's driven by Intel graphics.
When the options is deselected, the Intel graphics device disappears, Nvidia is
the only graphics device. The issue happens in this case.
Changing /sys/class/backlight/nv_backlight/brightness, the brightness level
remains the same - almost no backlight.
Using proprietary driver, brightness gets changed correctly by
/sys/class/backlight/nvidia_0/brightness.
No trace while using MMIOTRACE, under proprietary driver.
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^ permalink raw reply [flat|nested] 5+ messages in thread[parent not found: <bug-110407-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>]
* [Bug 110407] /sys/class/backlight/nv_backlight doesn't work on Dell Precision 7530 GP107GLM [Quadro P1000 Mobile] [not found] ` <bug-110407-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/> @ 2019-04-12 14:02 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ 2019-04-12 15:10 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2019-04-12 14:02 UTC (permalink / raw) To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW [-- Attachment #1.1: Type: text/plain, Size: 422 bytes --] https://bugs.freedesktop.org/show_bug.cgi?id=110407 --- Comment #1 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> --- When in non-switchable mode, are there other things in /sys/class/backlight? e.g. acpi_video0? Also, presumably this is on v5.0 or later? Prior to that, there was no backlight support for Pascal. -- You are receiving this mail because: You are the assignee for the bug. [-- Attachment #1.2: Type: text/html, Size: 1280 bytes --] [-- Attachment #2: Type: text/plain, Size: 153 bytes --] _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 110407] /sys/class/backlight/nv_backlight doesn't work on Dell Precision 7530 GP107GLM [Quadro P1000 Mobile] [not found] ` <bug-110407-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/> 2019-04-12 14:02 ` [Bug 110407] " bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2019-04-12 15:10 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ 2019-07-04 8:07 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ 2019-12-04 9:48 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ 3 siblings, 0 replies; 5+ messages in thread From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2019-04-12 15:10 UTC (permalink / raw) To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW [-- Attachment #1.1: Type: text/plain, Size: 806 bytes --] https://bugs.freedesktop.org/show_bug.cgi?id=110407 --- Comment #2 from Kai-Heng Feng <kai.heng.feng-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org> --- (In reply to Ilia Mirkin from comment #1) > When in non-switchable mode, are there other things in /sys/class/backlight? > e.g. acpi_video0? No, nv_backlight (or nvidia_0) is the only interface. I also tried to call _BCM directly via acpidbg, but both Intel's and Nvidia's _BCM method changes nothing. Please refer to the original bug report [1]. > > Also, presumably this is on v5.0 or later? Prior to that, there was no > backlight support for Pascal. Yes, on both v5.0 and linux-next. [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821882 -- You are receiving this mail because: You are the assignee for the bug. [-- Attachment #1.2: Type: text/html, Size: 1860 bytes --] [-- Attachment #2: Type: text/plain, Size: 153 bytes --] _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 110407] /sys/class/backlight/nv_backlight doesn't work on Dell Precision 7530 GP107GLM [Quadro P1000 Mobile] [not found] ` <bug-110407-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/> 2019-04-12 14:02 ` [Bug 110407] " bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ 2019-04-12 15:10 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2019-07-04 8:07 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ 2019-12-04 9:48 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ 3 siblings, 0 replies; 5+ messages in thread From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2019-07-04 8:07 UTC (permalink / raw) To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW [-- Attachment #1.1: Type: text/plain, Size: 263 bytes --] https://bugs.freedesktop.org/show_bug.cgi?id=110407 --- Comment #3 from Kai-Heng Feng <kai.heng.feng-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org> --- Any further ideas that I can try? -- You are receiving this mail because: You are the assignee for the bug. [-- Attachment #1.2: Type: text/html, Size: 1131 bytes --] [-- Attachment #2: Type: text/plain, Size: 153 bytes --] _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 110407] /sys/class/backlight/nv_backlight doesn't work on Dell Precision 7530 GP107GLM [Quadro P1000 Mobile] [not found] ` <bug-110407-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/> ` (2 preceding siblings ...) 2019-07-04 8:07 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2019-12-04 9:48 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ 3 siblings, 0 replies; 5+ messages in thread From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2019-12-04 9:48 UTC (permalink / raw) To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW [-- Attachment #1.1: Type: text/plain, Size: 871 bytes --] https://bugs.freedesktop.org/show_bug.cgi?id=110407 Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |MOVED --- Comment #4 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> --- -- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/483. -- You are receiving this mail because: You are the assignee for the bug. [-- Attachment #1.2: Type: text/html, Size: 2571 bytes --] [-- Attachment #2: Type: text/plain, Size: 153 bytes --] _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau ^ permalink raw reply [flat|nested] 5+ messages in thread
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2019-04-12 5:56 [Bug 110407] New: /sys/class/backlight/nv_backlight doesn't work on Dell Precision 7530 GP107GLM [Quadro P1000 Mobile] bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
[not found] ` <bug-110407-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>
2019-04-12 14:02 ` [Bug 110407] " bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2019-04-12 15:10 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2019-07-04 8:07 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2019-12-04 9:48 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
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