Same issue here on multiple dell latitudes E6540 laptops in company
(using Ubuntu 14.04.5). And it does happen after resuming from a
suspend. Almost every open application is affected with
distorted/missing letters. Looks like
http://askubuntu.com/questions/584922/how-do-i-fix-fonts-not-rendering-
and-missing-letters (intel driver issue?). Only restarting lightdm (or
logging out and in again), fixed the situation.
root@tom-laptop:/home/tdesloovere# lshw -sanitize -numeric -C display
*-display
description: VGA compatible controller
product: 4th Gen Core Processor Integrated Graphics Controller [8086:416]
vendor: Intel Corporation [8086]
physical id: 2
bus info: pci@0000:00:02.0
version: 06
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:33 memory:f5800000-f5bfffff memory:d0000000-dfffffff
ioport:f000(size=64)
root@tom-laptop:/home/tdesloovere# lspci -vvnn -d 8086:416
00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core
Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA
controller])
Subsystem: Dell Device [1028:05be]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 33
Region 0: Memory at f5800000 (64-bit, non-prefetchable) [size=4M]
Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at f000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Address: fee00018 Data: 0000
Capabilities: [d0] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a4] PCI Advanced Features
AFCap: TP+ FLR+
AFCtrl: FLR-
AFStatus: TP-
Kernel driver in use: i915
root@tom-laptop:/home/tdesloovere# dpkg -l | grep
xserver-xorg-video-intel-lts-xenial
ii xserver-xorg-video-intel-lts-xenial
2:2.99.917+git20160325-1ubuntu1~trusty1 amd64 X.Org X server
-- Intel i8xx, i9xx display driver
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1573959
Title:
On-screen text disappears after suspend
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1573959/+subscriptions
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