This bug also affects me on both trust and utopic. For both unity and
xfce. I have attached some screenshots I have taken over the past few
days. The non-rendering of characters remains until I reboot. The
duplicated characters or noise can go away after a redraw, but they come
back until a reboot.
$ sudo lspci -v
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated
Graphics (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device 5036
Flags: bus master, fast devsel, latency 0, IRQ 61
Memory at e0000000 (64-bit, non-prefetchable) [size=16M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
$ uname -a
Linux pada 3.16.0-31-generic #43~14.04.1-Ubuntu SMP Tue Mar 10 20:13:38 UTC
2015 x86_64 x86_64 x86_64 GNU/Linux
** Attachment added: "screenshots of graphics corruption"
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1342675/+attachment/4353351/+files/corruption-screenshots.png
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https://bugs.launchpad.net/bugs/1342675
Title:
Random characters in screen text suddenly disappear
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