Bug 213006
Summary: | backlight adjustment and blanking no longer work | ||
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Product: | [Fedora] Fedora | Reporter: | Rudi Chiarito <nutello> |
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
Status: | CLOSED INSUFFICIENT_DATA | QA Contact: | Brian Brock <bbrock> |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 6 | CC: | jaroslaw.gorny, jonstanley, wtogami |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | i386 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2008-01-08 00:26:47 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Rudi Chiarito
2006-10-30 15:33:30 UTC
I can confirm that. The same hardware (Dell Inspiron E1505 Dual Core, Bios A09), the same kernel (2.6.18-1.2798.fc6, i686), the same behaviour. as an addition, following lines apear in /var/log/acpid when I'm trying to change brightness: [Tue Oct 31 23:06:10 2006] received event "video LCD 00000086 00000000" [Tue Oct 31 23:06:10 2006] notifying client 2052[68:68] [Tue Oct 31 23:06:10 2006] notifying client 2153[0:0] [Tue Oct 31 23:06:10 2006] completed event "video LCD 00000086 00000000" [Tue Oct 31 23:06:10 2006] received event "video LCD 00000086 00000000" [Tue Oct 31 23:06:10 2006] notifying client 2052[68:68] [Tue Oct 31 23:06:10 2006] notifying client 2153[0:0] [Tue Oct 31 23:06:10 2006] completed event "video LCD 00000086 00000000" Today I've investigated further. The problem exists also on: kernel-smp-2.6.18-1.2200.fc5 (last FC5 kernel, but OS is still FC6) Last kernel _without_ this bug is kernel-smp-2.6.17-1.2187_FC5 (tested on FC6). Manually changing brightness by echoing values to /proc/acpi/video/VID/LCD/brightness works OK. It seems like 'video' ACPI module is causing troubles. I don't know how to really fix it, but: <code> echo "alias video off" > /etc/modprobe.conf </code> is a quick solution that works here. Unfortunatelly, manually removing 'video' module on running system does not help (modprobe removes it, however adjustment buttons don't work) - reboot is needed. So, it seems to me like an upstream kernel issue. Hello, I'm reviewing this bug as part of the kernel bug triage project, an attempt to isolate current bugs in the Fedora kernel. http://fedoraproject.org/wiki/KernelBugTriage I am CC'ing myself to this bug, however this version of Fedora is no longer maintained. Please attempt to reproduce this bug with a current version of Fedora (presently Fedora 8). If the bug no longer exists, please close the bug or I'll do so in a few days if there is no further information lodged. Thanks for using Fedora! Closing per previous comment. If you can provide the requested information, please feel free to re-open this bug. Tested on Fedora 8 - everything works as it should. |