Public bug reported:
Running 12.10, updated today, on iMac 11,2 (mid 2010) with AMD Radeon 4670.
Using kernel radeon driver (lsmod shows it running).
Normal boot results in black screen. Ctl-Alt-Del reboots; indicating that
system did boot.
If I place 'nomodeset' on kernel command line, main screen can be seen and
unity desktop runs normally.
This appears to be a regression in the kernel, similar to bug 597070 (ubuntu
11.04 - used fglrx to get video to work) and to bug 863969 (ubuntu 11.10 -
where an upgrade to the 3.2 kernel seemed to improve video detection).
Suspend and resume does not work either, not turning off the system, only the
video, and resuming to a black screen.
I think the problem is in KMS, because the black screen happens even if
I boot into text mode and using nomodeset fixes it. Hence filing this
against xorg but expect it to go to kernel developers.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xorg 1:7.7+1ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-4.4-generic 3.5.0-rc6
Uname: Linux 3.5.0-4-generic x86_64
.tmp.unity.support.test.1:
ApportVersion: 2.3-0ubuntu4
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Fri Jul 13 19:12:16 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes,
GraphicsCard:
Advanced Micro Devices [AMD] nee ATI RV730 XT [Mobility Radeon HD 4670]
[1002:9488] (prog-if 00 [VGA controller])
Subsystem: Apple Inc. Device [106b:00b6]
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64+mac (20120509)
MachineType: Apple Inc. iMac11,2
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: vmlinuz-3.5.0-4-generic
root=UUID=268e7eb7-d871-478c-a906-b719eea881ea ro nosplash nomodeset
initrd=EFI\ubuntu\initrd.img-3.5.0-4-generic
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/09/11
dmi.bios.vendor: Apple Inc.
dmi.bios.version: IM112.88Z.0057.B01.1112090906
dmi.board.name: Mac-F2238AC8
dmi.board.vendor: Apple Inc.
dmi.chassis.type: 13
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F2238AC8
dmi.modalias:
dmi:bvnAppleInc.:bvrIM112.88Z.0057.B01.1112090906:bd12/09/11:svnAppleInc.:pniMac11,2:pvr1.0:rvnAppleInc.:rnMac-F2238AC8:rvr:cvnAppleInc.:ct13:cvrMac-F2238AC8:
dmi.product.name: iMac11,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.8+bzr3249-0ubuntu2
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.33-3
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.3-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.3-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.12.1.902-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.19.0-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-1build1
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug quantal ubuntu
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https://bugs.launchpad.net/bugs/1024507
Title:
12.10 quantal boots to black screen on iMac
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