[Bug 621524] New: display backlight controls not working
http://bugzilla.novell.com/show_bug.cgi?id=621524 http://bugzilla.novell.com/show_bug.cgi?id=621524#c0 Summary: display backlight controls not working Classification: openSUSE Product: openSUSE 11.3 Version: RC 2 Platform: x86-64 OS/Version: openSUSE 11.3 Status: NEW Severity: Major Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: mail@andreas-demmer.de QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6 ( .NET CLR 3.5.30729; .NET4.0C) With kernel 2.6.34, I am unable to change the display brightness: The display backlight always stays 100% bright even when on battery or using a energy-saving power plan, sucking my battery dry in no time. I had a look at /proc/acpi/video to had a look at the brightness information, but the only folders there are GFX0 and PEGP, none of them contains an LCD subfolder. :-( It seems that brightness information is stored in: * GFX0/DD01/brightness * GFX0/DD02/brightness * PEGP/DD01/brightness * PEGP/DD02/brightness Writing "50" into this files (for 50% brightness) does not change the brightness. Interesting detail: xbacklight now sais the brightness was 50% but its not. Setting the brightness directly with xbacklight also does not work. Xorg detects backlight controls: "(II) intel(0): found backlight control interface /sys/class/backlight/acpi_video1", but there is also a acpi_video0. I have written different values in the "brightness" file of both entries but nothing happened. I suspect this to be an issue of the switchable graphics or the BIOS: My notebook (HP Envy 14) comes with switchable graphics, see bugs 621522 and 619869. Reproducible: Always -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=621524 http://bugzilla.novell.com/show_bug.cgi?id=621524#c1 --- Comment #1 from Andreas Demmer <mail@andreas-demmer.de> 2010-07-15 18:24:22 UTC --- I found a similar bug report over at the Ubuntu Bugzilla and they have an experimental fix, that is reported to work from owners of my notebook: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/568611/ Here are the sources: http://kernel.ubuntu.com/~kamal/i915_brightness/ I tried to merge the patches to the official openSUSE kernel but failed. Could someone please have a look at this? -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=621524 http://bugzilla.novell.com/show_bug.cgi?id=621524#c2 --- Comment #2 from Andreas Demmer <mail@andreas-demmer.de> 2010-07-16 11:44:31 UTC --- Created an attachment (id=376416) --> (http://bugzilla.novell.com/attachment.cgi?id=376416) kernel / driver patch I modified the above patches to work against the 11.3 kernel 2.6.34 -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=621524 http://bugzilla.novell.com/show_bug.cgi?id=621524#c3 --- Comment #3 from Andreas Demmer <mail@andreas-demmer.de> 2010-07-16 11:48:29 UTC --- I applied the attached patch und compiled the kernel from sources, works now if I write a brighness value into /sys/class/brightness/i915/brightness. FN Keys still fail but this problem can be fixed easily, already working on it. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=621524 http://bugzilla.novell.com/show_bug.cgi?id=621524#c4 Dirk Engel <dirk@engel-internet.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dirk@engel-internet.de --- Comment #4 from Dirk Engel <dirk@engel-internet.de> 2010-07-20 06:53:45 UTC --- Same problem (no backlight control) with my Samsung Q45 (Intel 965 GM), worked without any problems in OpenSUSE 11.2. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=621524 https://bugzilla.novell.com/show_bug.cgi?id=621524#c5 Robin Roevens <robin.roevens1@pandora.be> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |robin.roevens1@pandora.be OS/Version|openSUSE 11.3 |openSUSE 11.4 --- Comment #5 from Robin Roevens <robin.roevens1@pandora.be> 2011-08-08 21:46:17 UTC --- Same problem on openSuSE 11.4 on a Medion Akoya E6224 notebook. LED lit LCD display brightness can't be changed and /proc/acpi/video doesn't even exist (video.ko is loaded) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) with i915.ko -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=621524 https://bugzilla.novell.com/show_bug.cgi?id=621524#c6 Dmitry Knyaginin <netchaser@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |netchaser@gmail.com --- Comment #6 from Dmitry Knyaginin <netchaser@gmail.com> 2011-10-20 04:14:17 UTC --- Same problem on openSuSE 12.1 Beta 1 on HP Envy 17. FN keys work, but the lighting is not regulated. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=621524 https://bugzilla.novell.com/show_bug.cgi?id=621524#c7 Fred Blaise <fred.blaise@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |fred.blaise@gmail.com --- Comment #7 from Fred Blaise <fred.blaise@gmail.com> 2012-02-08 13:08:35 UTC --- Same on 12.1 with t520. Backlight changes do not take effects. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=621524 https://bugzilla.novell.com/show_bug.cgi?id=621524#c Jeff Mahoney <jeffm@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|Kernel |Kernel Version|RC 2 |Final AssignedTo|kernel-maintainers@forge.pr |eich@suse.com |ovo.novell.com | Product|openSUSE 11.3 |openSUSE 12.1 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=621524 https://bugzilla.novell.com/show_bug.cgi?id=621524#c Egbert Eich <eich@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|eich@suse.com |xorg-maintainer-bugs@forge. | |provo.novell.com -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=621524 https://bugzilla.novell.com/show_bug.cgi?id=621524#c Stefan Dirsch <sndirsch@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=621524 https://bugzilla.novell.com/show_bug.cgi?id=621524#c8 Clinton Gormley <clint@traveljury.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |clint@traveljury.com --- Comment #8 from Clinton Gormley <clint@traveljury.com> 2012-07-12 16:14:02 UTC --- This worked for me on: http://forums.opensuse.org/english/get-technical-help-here/laptop/470798-scr... -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=621524 https://bugzilla.novell.com/show_bug.cgi?id=621524#c9 --- Comment #9 from Robin Roevens <robin.roevens1@pandora.be> 2013-03-24 16:26:10 UTC --- Problem still remains in openSUSE 12.3. Found out however that I can change the brightness by echoing a value between 0 and `cat /sys/class/backlight/intel_backlight/max_brightness` to /sys/class/backlight/intel_backlight/brightness But Fn brightness controll are still not working. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=621524 https://bugzilla.novell.com/show_bug.cgi?id=621524#c10 Stefan Dirsch <sndirsch@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |WONTFIX --- Comment #10 from Stefan Dirsch <sndirsch@suse.com> 2014-06-10 09:59:41 UTC --- Unfortunately we cannot work on bugs for no longer maintained products. In case you can still reproduce the issue with a still maintained product (openSUSE 12.3/13.1 at the moment) or openSUSE:Factory, feel free to reopen. Thanks. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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