http://bugzilla.kernel.org/show_bug.cgi?id=12235
------- Comment #5 from khashayar.li...@gmail.com 2008-12-17 11:56 ------- On Wed, Dec 17, 2008 at 10:44 AM, Khashayar Naderehvandi <khashayar.li...@gmail.com> wrote: > On Wed, Dec 17, 2008 at 1:57 AM, Zhang Rui <rui.zh...@intel.com> wrote: >> On Wed, 2008-12-17 at 04:55 +0800, Matthew Garrett wrote: >>> On Tue, Dec 16, 2008 at 10:00:23AM -0800, Andrew Morton wrote: >>> >>> > OK, that's weird. I have a suspicion that we're about to find out that >>> > this is intentional, but I don't know what the fix is.. >>> >>> My recollection is that some BIOSes provide the list of brightness >>> values in reverse order - someone posted a patch to sort them in-kernel, >>> but I can't remember what happened to it. xbacklight will work because >>> it triggers a direct write to the hardware if the acpi driver isn't >>> loaded. >>> >> right, this seems to be a duplicate of >> http://bugzilla.kernel.org/show_bug.cgi?id=12037 >> >> khashayar, >> please attach the result of "grep . /proc/acpi/video/*/*/*". >> please try the patch in >> http://bugzilla.kernel.org/show_bug.cgi?id=12037#c5 >> and see if it helps. >> > Here's the output of "grep . /proc/acpi/video/*/*/*". The video module > wasn't loaded at boot time, but just before greping. I don't know if > that has any relevance. Also, there's an external display attached at > this point. > > /proc/acpi/video/VGA/CRTD/brightness:<not supported> > /proc/acpi/video/VGA/CRTD/EDID:<not supported> > /proc/acpi/video/VGA/CRTD/info:device_id: 0x0100 > /proc/acpi/video/VGA/CRTD/info:type: CRT > /proc/acpi/video/VGA/CRTD/info:known by bios: yes > /proc/acpi/video/VGA/CRTD/state:state: 0x1d > /proc/acpi/video/VGA/CRTD/state:query: 0x00 > /proc/acpi/video/VGA/DVID/brightness:<not supported> > /proc/acpi/video/VGA/DVID/EDID:<not supported> > /proc/acpi/video/VGA/DVID/info:device_id: 0x0321 > /proc/acpi/video/VGA/DVID/info:type: DVI > /proc/acpi/video/VGA/DVID/info:known by bios: yes > /proc/acpi/video/VGA/DVID/state:state: 0x1d > /proc/acpi/video/VGA/DVID/state:query: 0x00 > /proc/acpi/video/VGA/HDMI/brightness:<not supported> > /proc/acpi/video/VGA/HDMI/EDID:<not supported> > /proc/acpi/video/VGA/HDMI/info:device_id: 0x7320 > /proc/acpi/video/VGA/HDMI/info:type: DVI > /proc/acpi/video/VGA/HDMI/info:known by bios: yes > /proc/acpi/video/VGA/HDMI/state:state: 0x1d > /proc/acpi/video/VGA/HDMI/state:query: 0x00 > /proc/acpi/video/VGA/LCDD/brightness:levels: 100 91 86 81 76 70 65 60 > 55 50 45 40 35 30 25 20 > /proc/acpi/video/VGA/LCDD/brightness:current: 86 > /proc/acpi/video/VGA/LCDD/EDID:<not supported> > /proc/acpi/video/VGA/LCDD/info:device_id: 0x0410 > /proc/acpi/video/VGA/LCDD/info:type: LCD > /proc/acpi/video/VGA/LCDD/info:known by bios: yes > /proc/acpi/video/VGA/LCDD/state:state: 0x1d > /proc/acpi/video/VGA/LCDD/state:query: 0x00 > > > I will try the patch as soon as I can, and get back to you. > I've now tried the patch and can confirm that it fixes the problem. Well, almost; I'm now having the same issue reported in comment 8, http://bugzilla.kernel.org/show_bug.cgi?id=12037#c8. But that, I guess, is a whole other thing. Thanks for this one, though! Will the patch be part of the 2.6.28 final release? Regards, Khash. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
