Bug 913722
Summary: | Laptop brightness flickers spuriously on its own after a suspend/resume | ||
---|---|---|---|
Product: | [Fedora] Fedora | Reporter: | Tommi Kyntola <kynde> |
Component: | kde-workspace | Assignee: | Lukáš Tinkl <ltinkl> |
Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | low | Docs Contact: | |
Priority: | unspecified | ||
Version: | 18 | CC: | dvratil, jgrulich, jreznik, kevin, ltinkl, mbriza, mspaulding06, rdieter, rnovacek, than |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | x86_64 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | 4.10 | Doc Type: | Bug Fix |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2013-03-11 12:20:12 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | 907993 | ||
Bug Blocks: |
Description
Tommi Kyntola
2013-02-21 21:59:45 UTC
Ok, plot thickens. Right after submitting that I started watching a movie with the laptop. The brightness again behaves oddly, the brightness bar drops down to half, yet it shows 100% and the brightness remains fully on. Battery well over 70%. It does that a few times every few minutes and then it starts the same freaking flickering. Adjusting the brightness didn't alleviate the issue, I switched to tty2 and the screen kept flickering even while there but did stop as I got back to X. Odd. I'm also seeing this on my laptop. Lenovo Thinkpad X220 Fedora 18 Latest KDE Packages When plugging in power to my laptop it will switch rapidly between 60% (brightness set when unplugged) and 100% (brightness when plugged in) for upwards of a minute. It only happens sometimes; usually the first time I plug in power after a reboot. Found some additional information with possible solution to the issue: https://bugs.launchpad.net/ubuntu/+source/kde-workspace/+bug/1088150 interesting, ubuntu reverted some upstream commit. looking to see what it was... http://commits.kde.org/kde-workspace/1d08f4779a26ebba757111fd99182034e5282624 "emit onBrightnessChanged every time when a new brightness gets set and not just on brightnessKey press" I'm not keen on taking the same approach of reverting this. I think reverting this is sane. Do we really need the brightness OSD popping up when you (say) plug/unplug your notebook from power? I've found this odd ever since it got implemented. If you do like the feature, it should get some recursion guards added so it stops causing infinite recursion. onBrightnessChanged must not change the brightness, or at least not in a way which triggers another onBrightnessChanged event. Can you retry with KDE 4.10? I have, 4.10.1-1 from testing seems to work ok. I haven't had a flickering issue since I upgraded to it on three days ago. As a matter of fact, I too used to see this from time to time, but it's been a long while, esp not since I'd upgraded to 4.10 myself. This is indeed fixed in KDE 4.10 |