Bug 788429
Summary: | Backlight on Asus Eee PC 1005PEB does not work correctly (fixed) | ||
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Product: | [Fedora] Fedora | Reporter: | Gaius Acilius <SenatorAcilius> |
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
Status: | CLOSED INSUFFICIENT_DATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | low | Docs Contact: | |
Priority: | unspecified | ||
Version: | 16 | CC: | dennis, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mads, pjones, vserbine |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | x86_64 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2012-09-04 17:08:18 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
Gaius Acilius
2012-02-08 08:20:51 UTC
grub will not use the linux settings - and the only use of them is to hand them over to the linux kernel. The only explanation I can see is thus that linux by default leaves the hardware in a state where the backlight is a bit strange and grub doesn't try to mess with the backlight at all. Grub could perhaps try to restore that to some 'sane' values, but it would also be strange if grub used settings that was completely different from what the user intentionally has selected. It could thus be considered a bug 'somewhere else' that it leaves the system with odd backlight settings. Do you see this with the latest f16 updates? GRUB doesn't touch the backlight at all. (In reply to comment #2) > GRUB doesn't touch the backlight at all. Perhaps it should. Or should this issue be reassigned to the kernel because it is leaving the system in a 'bad' state? Ok, reassigning to the kernel. GRUB do not have a full ACPI implementation and do not touch backlight settings. If the kernel by default (and workaround-able with acpi settings) leave the system in a state where the boot loader would have to adjust the backlight then it seems like something that should be fixed in the kernel. (IIRC there were some similar bugs a year ago, possibly related to upower.) Gaius, I guess we would need to know if you see the issue with the latest kernel update ... and which kernel version that is. |