schmirrwurst at googlemail.com
2009-Aug-22 18:34 UTC
[Nouveau] Put acpi/backlight code into kernel
Hi, I'm trying to bring devs to support for backlight on nv50 cards for above 1 year, without any success A lot of laptop (from mac, hp, samsung) doesn't have laptop_panel in hal, and therefore no support for acpi/backlight..., and no entry in /proc/acpi/video nor /sys/class/backlight Kernel team is not reacting, hal team won't fix, devicekit need standardise i/o... I've tried nouveau, the acpi/backlight support works pretty well, but the driver itself is unusable for lambda users, it needs some times... So I'm asking if someone could put the backlight code in a kernel module, or in the kernel itself, for people to have backlight support even when using nvidia driver or nv, or vesa... ???
On Sat, Aug 22, 2009 at 08:34:28PM +0200, schmirrwurst at googlemail.com wrote:> I've tried nouveau, the acpi/backlight support works pretty well, but the > driver itself is unusable for lambda users, it needs some times... > So I'm asking if someone could put the backlight code in a kernel module, or > in the kernel itself, for people to have backlight support even when using > nvidia driver or nv, or vesa... ???Not really - drivers that touch registers belonging to other drivers are generally frowned upon. -- Matthew Garrett | mjg59 at srcf.ucam.org
schmirrwurst at googlemail.com
2009-Sep-13 18:09 UTC
[Nouveau] Put acpi/backlight code into kernel
Le dimanche 13 septembre 2009 19:51:59, vous avez ?crit :> nouveau is perfectly stable for 2D use. You'd really need to ask nvidia > to provide support for their driver. >I'm trying to use nouveau since 2 month, and wasn't able to use it more than 1 minute without trouble... and I'm using linux since 10 years, so I'm not a bloody newbie... Nvidia has already been asked 10000 times, they won't support backlight, because, every manufacturer is managing it differently, and there is anyway no real linux support by nvidia, that maybe also one of the most reason for nouveau, isn't it ? I though it could be nice, to have backlight support until nouveau is really stable, because at that point, it is not designed for lambda users at all... Nividia, nor someone else seems to be concerned by the fact that a lot of people, even with very recent hardware, are affected from this issue... and what we need, is a quick fix, even if nvidia would think about it, it would last some years until it works, I'm already waiting for backlight support for two years, one or two years more, and my hardware will be obselete ! We really need a fix that is quickly implemented, and if nouveau has already the code working, it must be not so complicated to add it to the kernel, or in a way that the backlight support is also working without nouveau...
Reasonably Related Threads
- [PATCH] Add in-kernel backlight control support
- [Bug 26349] New: nouveau_hybrid_setup: disables a discrete NVS 3100m on ThinkPad T410
- [Bug 110407] New: /sys/class/backlight/nv_backlight doesn't work on Dell Precision 7530 GP107GLM [Quadro P1000 Mobile]
- [PATCH 6.2 regression fix] drm/nouveau/kms: Fix backlight registration
- [PATCH 6.2 regression fix] drm/nouveau/kms: Fix backlight registration