Tomdkat, to advise, posting with nomodeset makes the log useless. You can try setting up SSH, so that when it boots up, even though the video is off, you may copy the log from the running machine.
** Attachment removed: "dmesg output" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1598935/+attachment/4695538/+files/dmesg-2.log ** Attachment removed: "Xorg log file" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1598935/+attachment/4695515/+files/Xorg.0.log -- 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/1598935 Title: Ubuntu 16.04 won't properly boot due to radeon module issue Status in linux package in Ubuntu: Incomplete Bug description: When I boot an Ubuntu 16.04 live DVD on a Gateway system with an AMD A6-5400K APU, with an integrated Radeon HD 7540D graphics adapter, I get a black screen with no video image. If I look at "dmesg" output, I see these messages: ubuntu@ubuntu:~$ dmesg | grep "UMS" [ 4.827258] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon module! [ 39.561534] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon module! [ 76.905778] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon module! We currently run Ubuntu 14.04.2 on the system with no issue, including using the "radeon" video driver. WORKAROUND: Boot using kernel parameter: nomodeset ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-21-generic 4.4.0-21.37 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: ubuntu 2057 F.... pulseaudio /dev/snd/controlC0: ubuntu 2057 F.... pulseaudio /dev/snd/controlC1: ubuntu 2057 F.... pulseaudio CasperVersion: 1.376 Date: Mon Jul 4 20:08:04 2016 LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: Gateway DX4380G ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/hostname.seed boot=casper quiet splash nomodeset --- 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-4.4.0-21-generic N/A linux-backports-modules-4.4.0-21-generic N/A linux-firmware 1.157 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/04/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P11-A1 dmi.board.name: DX4380G dmi.board.vendor: Gateway dmi.board.version: 1.02 dmi.chassis.type: 3 dmi.chassis.vendor: Gateway dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP11-A1:bd09/04/2012:svnGateway:pnDX4380G:pvr:rvnGateway:rnDX4380G:rvr1.02:cvnGateway:ct3:cvr: dmi.product.name: DX4380G dmi.sys.vendor: Gateway To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1598935/+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
