Étienne BERSAC, the latest mainline kernel is 4.1.1 (not 4.1-rc2).
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1452858
Title:
Screen lit off on iMac 12,2 after a while
Status in linux package in Ubuntu:
Incomplete
Bug description:
Hello,
I'm running Ubuntu on an iMac 12,2 since november 2012. From time to
time and more and more frequently the screen lit off. The only way i
can get it on is to suspend/resume. But then, it lit off soon. I
suspect some heating. Actually, the output of the cooling system is
way hotter with Ubuntu than Mac OS X.
So i would like to switch to the IGD card rather than the discrete
one. But there is no vga_switcheroo.
How to debug screen lit off ? How to detect screen heating ? How to
disable discrete card ? Is it kernel ? Xorg ? Where to search ?
Regards,
Étienne
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-15-generic 3.19.0-15.15 [modified:
boot/vmlinuz-3.19.0-15-generic]
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: bersace 1709 F.... pulseaudio
gdm 28946 F.... pulseaudio
/dev/snd/controlC0: bersace 1709 F.... pulseaudio
gdm 28946 F.... pulseaudio
CRDA:
country AW: DFS-UNSET
(2402 - 2482 @ 40), (N/A, 20), (N/A)
(5170 - 5250 @ 40), (N/A, 20), (N/A)
(5250 - 5330 @ 40), (N/A, 20), (0 ms), DFS
(5490 - 5710 @ 40), (N/A, 27), (0 ms), DFS
Date: Thu May 7 20:51:33 2015
HibernationDevice: RESUME=UUID=a842b955-b20e-4514-af83-7b6f45dc1000
InstallationDate: Installed on 2015-04-29 (8 days ago)
InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64
(20150422)
MachineType: Apple Inc. iMac12,2
ProcEnviron:
TERM=screen
PATH=(custom, no user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB:
0 inteldrmfb
1 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-15-generic.efi.signed
root=UUID=6f639d83-47c9-41fb-aa9b-c3931e37acc5 ro rootflags=subvol=@ quiet
splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.19.0-15-generic N/A
linux-backports-modules-3.19.0-15-generic N/A
linux-firmware 1.143
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/24/12
dmi.bios.vendor: Apple Inc.
dmi.bios.version: IM121.88Z.0047.B1F.1201241648
dmi.board.name: Mac-942B59F58194171B
dmi.board.vendor: Apple Inc.
dmi.board.version: iMac12,2
dmi.chassis.type: 13
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-942B59F58194171B
dmi.modalias:
dmi:bvnAppleInc.:bvrIM121.88Z.0047.B1F.1201241648:bd01/24/12:svnAppleInc.:pniMac12,2:pvr1.0:rvnAppleInc.:rnMac-942B59F58194171B:rvriMac12,2:cvnAppleInc.:ct13:cvrMac-942B59F58194171B:
dmi.product.name: iMac12,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
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