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Message #42896
[Bug 1265544]
I just noticed the latest drm-intel-nightly (commit
f27f16540be56813df2ebb8e1106dd5c258f07c3) has fixed the issue.
After bisecting, it seems the blank screen issues I was getting after
modesetting or suspend/resume have been fixed starting from commit:
commit b2f19d1a1d7b262cf5fbe6033776afcf6d1ab526
Author: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Date: Thu Dec 19 14:29:44 2013 -0200
drm/i915: set the backlight panel delays registers to 1
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https://bugs.launchpad.net/bugs/1265544
Title:
8086:0a16 [UX302LG] black screen on boot 3.12.0-7
Status in The Linux Kernel:
Incomplete
Status in “linux” package in Ubuntu:
Triaged
Bug description:
Same description/workaround as
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1263015
I tried both Enable CSM and non-CSM boot.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.12.0-7-generic 3.12.0-7.15
ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4
Uname: Linux 3.12.0-7-generic x86_64
ApportVersion: 2.12.7-0ubuntu3
Architecture: amd64
Date: Thu Jan 2 09:59:33 2014
HibernationDevice: RESUME=UUID=e6458b44-fdb9-4db5-8cac-40ee0bbf9cf6
InstallationDate: Installed on 2013-12-31 (1 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20131231)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 03eb:8a03 Atmel Corp.
Bus 001 Device 003: ID 1bcf:2987 Sunplus Innovation Technology Inc.
Bus 001 Device 002: ID 8087:07dc Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. UX302LG
ProcFB: 0 simple
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.12.0-7-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro recovery nomodeset
RelatedPackageVersions:
linux-restricted-modules-3.12.0-7-generic N/A
linux-backports-modules-3.12.0-7-generic N/A
linux-firmware 1.117
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/30/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX302LG.207
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX302LG
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX302LG.207:bd10/30/2013:svnASUSTeKCOMPUTERINC.:pnUX302LG:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX302LG:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: UX302LG
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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References