Occasionally, when coming out of a suspend and getting past the light locker screen, font rendering broken. Application windows are missing most but not all letters, and text for icons on the desktop is blurry. Already open terminal windows won't have any text, but sometimes opening a new terminal window does have working text for the terminal, even though the text in the menu bar is broken.
Programs like Thunderbird often still display text unless they are forced to re-render the window, at which point the fonts also disappear. Firefox still renders web pages but is missing the text in the menu bars.
The bug itself manifested with the default Xorg settings (no xorg.conf file).
WORKAROUND: Insert in xorg.conf file:
Section "Device"
Identifier "intel"
Driver "modesetting"
EndSection
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
Uname: Linux 4.4.0-57-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: XFCE
Date: Mon Dec 26 08:39:33 2016
DistUpgraded: 2016-07-31 00:23:07,940 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (Failed to execute child process "./xorg_fix_proprietary.py" (No such file or directory))
DistroCodename: xenial
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 5.0.24, 4.4.0-53-generic, x86_64: installed
virtualbox, 5.0.24, 4.4.0-57-generic, x86_64: installed
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller])
Subsystem: Dell Haswell-ULT Integrated Graphics Controller [1028:060a]
InstallationDate: Installed on 2015-02-11 (683 days ago)
InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723)
LightdmDisplayLog:
(II) AIGLX: Suspending AIGLX clients for VT switch
(II) AIGLX: Suspending AIGLX clients for VT switch
(II) AIGLX: Suspending AIGLX clients for VT switch
(II) AIGLX: Suspending AIGLX clients for VT switch
LightdmGreeterLogOld:
** (lightdm-gtk-greeter:1644): WARNING **: Failed to load user image: Failed to open file '/home/kai/.face': No such file or directory
init: indicator-power main process (1677) killed by TERM signal
init: indicator-application main process (1682) killed by TERM signal
MachineType: Dell Inc. XPS13 9333
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-57-generic root=/dev/mapper/ubuntu-root ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to xenial on 2016-07-30 (148 days ago)
XorgConf:
Section "Device"
Identifier "intel"
Driver "modesetting"
EndSection
dmi.bios.date: 03/19/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A04
dmi.board.name: 0D13CR
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA04:bd03/19/2014:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn0D13CR:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: XPS13 9333
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.2
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
Kai Blin, thank you for reporting this and helping make Ubuntu better.
To see if this is already resolved in Ubuntu, could you please test http://