https://bugzilla.novell.com/show_bug.cgi?id=815625 https://bugzilla.novell.com/show_bug.cgi?id=815625#c Stefan Dirsch changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P5 - None |P3 - Medium Status|NEW |ASSIGNED AssignedTo|bnc-team-xorg-bugs@forge.pr |xorg-maintainer-bugs@forge. |ovo.novell.com |provo.novell.com Summary|brightness keys do not work |Brightness keys do not work |on Lenovo Thinkpad X131e |on Lenovo's Chromebook | |'Thinkpad X131e' -- 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=815625 https://bugzilla.novell.com/show_bug.cgi?id=815625#c2 Nicholas Steeves changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |ASSIGNED InfoProvider|nick.steeves@shaw.ca | --- Comment #2 from Nicholas Steeves 2013-04-17 20:50:13 UTC --- Created an attachment (id=535655) --> (http://bugzilla.novell.com/attachment.cgi?id=535655) supportconfig tarball -- 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=815625 https://bugzilla.novell.com/show_bug.cgi?id=815625#c4 --- Comment #4 from Nicholas Steeves 2013-04-18 21:28:38 UTC --- Brightness keys work in linux-3.6.0, but not in 3.7.0. It seems like the regression happened somewhere in patch-3.7. -- 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=815625 https://bugzilla.novell.com/show_bug.cgi?id=815625#c6 --- Comment #6 from Stefan Dirsch 2013-04-24 08:32:06 UTC --- Oliver, this bug is about Lenovo's Chromebook, not x230i. Things to verify are mentioned on https://wiki.archlinux.org/index.php/Backlight For intel GPUs you can also try using 'xbacklight'. -- 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=815625 https://bugzilla.novell.com/show_bug.cgi?id=815625#c8 --- Comment #8 from Nicholas Steeves 2013-05-20 23:04:59 UTC --- Stefan, Brightness can be changed with /sys/class/backlight/acpi_video0 and /sys/class/backlight/intel_backlight xset dpms works xbacklight works In the bugzilla.kernel.org Oliver links to, Peter Weber maintains that it affects "all current thinkpads From 2012." This bug report matches the behaviour I've observed. The commit that broke things: https://bugzilla.kernel.org/show_bug.cgi?id=51231#c12 and what the ACPI tables show in response to Windows8/2012 OSI: https://bugzilla.kernel.org/show_bug.cgi?id=51231#c19 Oliver, It sounds like your Thinkpad model behaves differently than mine, but just to make sure, could you please hold down your brightness-up or brightness-down keys for more than five seconds? Mine will change the brightness in a jerky and uncontrollable way, but the brightness will lurch in the right direction. -- 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=815625 https://bugzilla.novell.com/show_bug.cgi?id=815625#c10 --- Comment #10 from Nicholas Steeves 2013-06-10 19:51:12 UTC --- Update: I'm not sure why I didn't think of this before, but outside of X11 it takes five Fn+F8 keypresses to register one brightness level change. This is consistent with the Windows8/2012 OSI change in the kernel bug. Five keypresses per hardware brightness level seems to infer that my Thinkpad actually only supports 20 levels. Stephan, to clarify, X11 and/or KDE need to work around the change in kernel behaviour for handling brightness that was introduced in linux-3.7. Oliver, Could you please check to see if you can brightness level outside of X11, and if so check count how many keypresses it takes to change one hardware brightness level? -- 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=815625 https://bugzilla.novell.com/show_bug.cgi?id=815625#c13 --- Comment #13 from Nicholas Steeves 2013-06-11 21:14:33 UTC --- Oliver, While there might be some overlap between our Thinkpad's issues, yours has something more serious going on. I'd definitely file a separate bug for your Thinkpad's hardware issue. It's possible that the x230i is supported with a newer kernel, so I'd try installing and booting the Tumbleweed kernel (linux-3.9.5) Be careful if you add the repository, so you don't accidentally upgrade everything to Tumbleweed. In you new bug report, make sure you mention whether or not your brightness keys work with the Tumbleweed kernel. -- 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=815625 https://bugzilla.novell.com/show_bug.cgi?id=815625#c15 --- Comment #15 from Stefan Dirsch 2013-07-15 08:22:50 UTC --- (In reply to comment #14)

As a test for a possible upstream fix, I thought I'd try booting the Fedora 19 KDE live cd. This bug is fixed in that release. Maybe it can be back-ported?

If we would know what the fix is, yes. Most likely the fix has happened upstream, and Fedora guys don't know either what the fix has been ... -- 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.

http://bugzilla.novell.com/show_bug.cgi?id=815625 Jan Ritzerfeld changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |nick.steeves@shaw.ca Flags| |needinfo?(nick.steeves@shaw | |.ca) --- Comment #17 from Jan Ritzerfeld --- Works for me now using 13.2 on a T430s. @Nicholas: Do the brightness keys work on your X131e using 13.2, too? -- You are receiving this mail because: You are on the CC list for the bug.