apport information ** Attachment added: "Lsusb.txt" https://bugs.launchpad.net/bugs/1743427/+attachment/5037466/+files/Lsusb.txt
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1743427 Title: Black screen with iMac 2011 and ATI Radeon 6970M Status in linux package in Ubuntu: Confirmed 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 --- 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743427/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp