Red Hat Bugzilla – Full Text Bug Listing
|Summary:||Backlight on Samsung N127 laptop blinks after update to kernel-188.8.131.52|
|Product:||[Fedora] Fedora||Reporter:||Kirin Yuri <kirin.yuri>|
|Component:||kernel||Assignee:||Kernel Maintainer List <kernel-maint>|
|Status:||CLOSED ERRATA||QA Contact:||Fedora Extras Quality Assurance <extras-qa>|
|Version:||15||CC:||gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mangoo, yann|
|Fixed In Version:||kernel-184.108.40.206-1.fc15||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2011-11-17 18:28:36 EST||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description Kirin Yuri 2011-09-09 12:11:32 EDT
Description of problem: After update to kernel-220.127.116.11-0.fc15.i686 a backlight of my laptop Samsung N127 starts to blink after authorization in KDM. Difference between nice-working kernel-2.6.40-4.fc15.i686 and kernel-18.104.22.168-0.fc15.i686 is samsung_laptop kernel module. /var/log/messages is full off: "samsung_laptop: SABI set command 0x01 failed with completion flag 0xaa and data 0xff" Version-Release number of selected component (if applicable): kernel-22.214.171.124-5.fc15.i686 kernel-126.96.36.199-0.fc15.i686 How reproducible: Every boot. Steps to Reproduce: 1. Get Samsung N127 laptop 2. Install Fedora 15 and update kernel to kernel-188.8.131.52 3. Install KDE and log into KDM. Actual results: Backlight starts to blink few times in a second. After a some time it stops, but starts again after manual brightness regulation. Expected results: Backlight not blinks.
Comment 1 Tomasz Chmielewski 2011-09-13 08:16:42 EDT
I see exactly the same behaviour (blinking) on Samsung N130.
Comment 2 Chuck Ebbert 2011-09-14 06:05:51 EDT
The fix for this seems to have fallen into a black hole: https://lkml.org/lkml/2011/4/20/1 https://lkml.org/lkml/2011/5/11/548
Comment 3 Chuck Ebbert 2011-10-24 21:39:16 EDT
See: https://bugzilla.redhat.com/show_bug.cgi?id=747560#c3 for some possible workarounds.
Comment 4 Chuck Ebbert 2011-10-24 22:42:18 EDT
Patch from comment 2 has been applied to the f15 kernel and should be in the next update (probably 184.108.40.206).
Comment 5 Fedora Update System 2011-10-27 10:12:40 EDT
kernel-220.127.116.11-2.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-18.104.22.168-2.fc15
Comment 6 Fedora Update System 2011-10-29 20:35:25 EDT
Package kernel-22.214.171.124-2.fc15: * should fix your issue, * was pushed to the Fedora 15 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-126.96.36.199-2.fc15' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2011-15108 then log in and leave karma (feedback).
Comment 7 Yann Droneaud 2011-10-31 11:31:21 EDT
(In reply to comment #6) > Package kernel-188.8.131.52-2.fc15 > * should fix your issue, It doesn't fix flickering problem reported in bug 747560 (on Samsung n210).
Comment 8 Fedora Update System 2011-11-01 15:58:51 EDT
kernel-184.108.40.206-4.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-220.127.116.11-4.fc15
Comment 9 Tomasz Chmielewski 2011-11-01 16:28:52 EDT
BTW, was this pushed to the upstream kernel (the coming 3.2-rc*, or is there already perhaps)?
Comment 10 Josh Boyer 2011-11-02 12:15:56 EDT
(In reply to comment #9) > BTW, was this pushed to the upstream kernel (the coming 3.2-rc*, or is there > already perhaps)? Yes, it's in Linus' tree already.
Comment 11 Fedora Update System 2011-11-11 19:07:55 EST
kernel-18.104.22.168-1.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-22.214.171.124-1.fc15
Comment 12 Fedora Update System 2011-11-17 18:28:36 EST
kernel-126.96.36.199-1.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.