It happened after upgrading from 14.04 to 16.04. I did this when prompted by Software Updater, so presumably it was the first version of 16.04 released through Updater. It didn't happen right after, or soon after, that upgrade, and I don't think there were any updates to 16.04 in the days immediately before the problem started. - I can't swear to that, as, naturally, I wasn't paying that much attention to all the little updates one gets almost every day.
If there's a way to check my update history, you'll have to tell me how. I do remember when the problem hit, as it was Christmas day, so I have a definite date to search back from. >From what I was able to find online, I gather that ultimately the problem originates with 16.04 no longer using fglrx, although my video card is still supposed to be supported in 16.04 - and for awhile, it was. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1743797 Title: [HP Compaq nc6400] Blank screen on boot Status in xorg package in Ubuntu: Incomplete Bug description: A few months after upgrading to Ubuntu 16.04, I got a black screen after booting. WORKAROUND: Use kernel parameter: radeon.modeset=0 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-104.127-generic 4.4.98 Uname: Linux 4.4.0-104-generic x86_64 .tmp.unity_support_test.1: ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Wed Jan 17 10:15:32 2018 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] RV515/M52 [Mobility Radeon X1300] [1002:714a] (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company RV515/M52 [Mobility Radeon X1300] [103c:30ac] InstallationDate: Installed on 2014-04-10 (1378 days ago) InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release amd64 (20140204) MachineType: Hewlett-Packard HP Compaq nc6400 (RB523UA#ABA) PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcEnviron: LANGUAGE=en_CA:en PATH=(custom, no user) LANG=en_CA.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-104-generic root=UUID=123f436f-0331-4097-8a8e-54cc927298c4 ro radeon.modeset=0 Renderer: Software SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/18/2006 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68YCD Ver. F.08 dmi.board.name: 30AC dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 56.34 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68YCDVer.F.08:bd12/18/2006:svnHewlett-Packard:pnHPCompaqnc6400(RB523UA#ABA):pvrF.08:rvnHewlett-Packard:rn30AC:rvrKBCVersion56.34:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP Compaq nc6400 (RB523UA#ABA) dmi.product.version: F.08 dmi.sys.vendor: Hewlett-Packard version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.83-1~16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.4-0ubuntu1~16.04.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.4-0ubuntu1~16.04.2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Wed Jan 17 08:23:08 2018 xserver.configfile: default xserver.errors: open /dev/dri/card0: No such file or directory open /dev/dri/card0: No such file or directory Screen 0 deleted because of no matching config section. Screen 0 deleted because of no matching config section. AIGLX: reverting to software rendering xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.18.4-0ubuntu0.7 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1743797/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp