** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1743427
Title:
Black screen with iMac 2011 and ATI Radeon 6970M
Status in linux package in Ubuntu:
Incomplete
Bug description:
Dear community!
I have installed Ubuntu 17.10 (also tried 17.04 and 16.04), and the
system gets a black screen on boot with all tested Ubuntu versions.
Also ping and ssh to the host does not work. The fan's are running,
the screen is black and nothing more.
When i insert in Grub nomodeset, the system can boot.
I have also tested Kernel 4.14 and 4.15RC7.
Hardware Information:
00:02.0 Display controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] Blackcomb [Radeon HD 6970M/6990M]
Thanks for help or any hint.
Best regards,
Hans
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ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: christian 1756 F.... pulseaudio
/dev/snd/controlC1: christian 1756 F.... pulseaudio
DistroRelease: Ubuntu 17.10
HibernationDevice: RESUME=/dev/mapper/storage-swap
InstallationDate: Installed on 2018-01-15 (0 days ago)
InstallationMedia: Ubuntu-Server 17.10 "Artful Aardvark" - Release amd64
(20180108.1)
MachineType: Apple Inc. iMac12,2
Package: linux (not installed)
ProcEnviron:
LANGUAGE=
TERM=xterm-256color
PATH=(custom, no user)
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-25-generic.efi.signed
root=/dev/mapper/storage-root ro rootflags=subvol=@ nomodeset
ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not
accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.13.0-25-generic N/A
linux-backports-modules-4.13.0-25-generic N/A
linux-firmware 1.169.1
Tags: artful
Uname: Linux 4.13.0-25-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 08/08/17
dmi.bios.vendor: Apple Inc.
dmi.bios.version: IM121.88Z.004D.B00.1708080012
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.004D.B00.1708080012:bd08/08/17:svnAppleInc.:pniMac12,2:pvr1.0:rvnAppleInc.:rnMac-942B59F58194171B:rvriMac12,2:cvnAppleInc.:ct13:cvrMac-942B59F58194171B:
dmi.product.family: iMac
dmi.product.name: iMac12,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
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