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Description of problem: Backlight is blocked at maximum level, it does not respond neither to Fn buttons nor changes on GNOME toolbar widget. I had same problem with past releases, I tried different workarounds [1] and the xorg.conf one used to work. But with Fedora 22 Beta, it no longer works. [1] https://wiki.archlinux.org/index.php/Intel_graphics#Backlight_is_not_adjustable Version-Release number of selected component (if applicable): $ uname -a Linux toshiba-laptop 4.0.0-1.fc22.x86_64 #1 SMP Mon Apr 13 10:03:33 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux How reproducible: Always (w/ and w/o /etc/xorg.conf.d/20-intel.conf) Steps to Reproduce: 1. Boot 2. Try to adjust backlight levels Actual results: Backlight doesn't change and GNOME toolbar does weird things Expected results: Backlight changes and GNOME toolbar widget changes accordingly Additional info: $ ls -la /sys/class/backlight/ total 0 drwxr-xr-x. 2 root root 0 abr 28 12:09 . drwxr-xr-x. 52 root root 0 abr 28 11:45 .. lrwxrwxrwx. 1 root root 0 abr 28 11:45 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight lrwxrwxrwx. 1 root root 0 abr 28 11:46 toshiba -> ../../devices/LNXSYSTM:00/LNXSYBUS:00/TOS1900:00/backlight/toshiba
Hi, Ok, I think that this may be more or less the same bug as bug 1206036. I've done a scratch kernel build with the fix for that bug: http://koji.fedoraproject.org/koji/taskinfo?taskID=9475621 Please download the following rpms: kernel-3.19.3-...rpm kernel-core-3.19.3-...rpm kernel-modules-3.19.3-...rpm For your arch from there. This is an older scratch build, so the files may be 404 (scratch builds get cleaned up regulary). I've also started a new scratch build in case the above one no longer has the necessary output files: http://koji.fedoraproject.org/koji/taskinfo?taskID=9585410 Note it will take a while for this build to complete... Save them all to the same directory (which should not contain other rpms) and do: sudo rpm -ivh kernel-*.rpm From within that directory. Then boot into the new kernel (without any special kernel commandline options) and check if the backlight works as expected. Note this is an F-21 / 3.19 kernel as bug 1206036 is an F-21 bug. If this scratch build fixes things, please also try an unfixed F-21 kernel, e.g. : http://koji.fedoraproject.org/koji/buildinfo?buildID=629573 (install / test instructions are the same). If the scratch-build fixes things, and the regular F-21 build shows the same problems as the F-22 / 4.0 kernel then this is the same bug, and I'll go work on getting the fix included into the regular Fedora kernel builds. Thanks & Regards, Hans
Backlight works with both the F21 stock kernel (3.17.4-301) and your custom kernel build. But I'm sure it didn't work at the time I was using F21, neither it worked with the 4.0 kernel in F22. Is it a 4.0 regression? Both kernels show: $ ls -la /sys/class/backlight/ total 0 drwxr-xr-x. 2 root root 0 abr 29 16:13 . drwxr-xr-x. 49 root root 0 abr 29 16:06 .. lrwxrwxrwx. 1 root root 0 abr 29 16:06 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight
Backlight works with both the stock F21 kernel (3.17.4-301) and your custom kernel build. But I'm sure it didn't work at the time I was using F21, neither it worked with the 4.0 kernel in F22. Is it a 4.0 regression? Both kernels show: $ ls -la /sys/class/backlight/ total 0 drwxr-xr-x. 2 root root 0 abr 29 16:13 . drwxr-xr-x. 49 root root 0 abr 29 16:06 .. lrwxrwxrwx. 1 root root 0 abr 29 16:06 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight
Hi, (In reply to Alex Puchades from comment #3) > Backlight works with both the stock F21 kernel (3.17.4-301) and your custom > kernel build. But I'm sure it didn't work at the time I was using F21, > neither it worked with the 4.0 kernel in F22. Is it a 4.0 regression? Or maybe a 3.19 regression, can you please try this 3.19 build (install instructions are the same) ? : http://koji.fedoraproject.org/koji/buildinfo?buildID=629573 That one does not have the fix my scratch build has. So if that one is broken too, then it is a 3.19 regression fixed by the patch I added to the scratch build. Thanks & Regards, Hans
It's what you said. Backlight is broken with the stock 3.19 kernel. Both intel_backlight and toshiba show up in /sys/class/backlight.
(In reply to Alex Puchades from comment #5) > It's what you said. Backlight is broken with the stock 3.19 kernel. Both > intel_backlight and toshiba show up in /sys/class/backlight. Thanks, then this is fixed by this upstream commit: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/platform/x86/toshiba_acpi.c?id=358d6a2c3ecae2b22c7d7e61f9d5672557446dfb I've asked the Fedora kernel maintainer to consider adding this to the official Fedora kernel builds.
The patch has been added and will be in the 3.19.6 builds on F20/F21. F22 will get a build soon.
kernel-3.19.6-200.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/kernel-3.19.6-200.fc21
kernel-3.19.6-100.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/kernel-3.19.6-100.fc20
Package kernel-3.19.6-100.fc20: * should fix your issue, * was pushed to the Fedora 20 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-3.19.6-100.fc20' as soon as you are able to, then reboot. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-7442/kernel-3.19.6-100.fc20 then log in and leave karma (feedback).
kernel-4.0.2-300.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/kernel-4.0.2-300.fc22
kernel-3.19.7-100.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/kernel-3.19.7-100.fc20
kernel-3.19.7-200.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/kernel-3.19.7-200.fc21
kernel-4.0.2-300.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
kernel-3.19.7-200.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.
kernel-3.19.8-100.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/kernel-3.19.8-100.fc20
kernel-3.19.8-100.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.