I am also affected by this (or at least a very similar) bug on a Sony
VAIO VPCEA laptop on kernel 3.0.0-14-generic (oneiric).
After the display blanks (e.g. if `xset s blank` is set), the laptop
display is corrupted (pink and white vertical stripes) after resuming.
An externally connected monitor turns back on correctly.
I can manually trigger by running `sleep 1 && xset dpms force off`
Running `xset dpms force off` (without the sleep) causes the display to cycle
off and back on quickly, upon which it recovers correctly.
lspci lists the video card as:
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated
Graphics Controller (rev 02)
lshw says:
*-cpu
description: CPU
product: Intel(R) Core(TM) i5 CPU M 450 @ 2.40GHz
vendor: Intel Corp.
physical id: 4
bus info: cpu@0
version: Intel(R) Core(TM) i5 CPU M 450 @ 2.40GHz
serial: N/A
slot: N/A
size: 1199MHz
capacity: 1199MHz
width: 64 bits
clock: 133MHz
capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic
sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl
xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3
cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida arat tpr_shadow vnmi
flexpriority ept vpid cpufreq
*-display
description: VGA compatible controller
product: Core Processor Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:42 memory:f0000000-f03fffff memory:e0000000-efffffff
ioport:e080(size=8)
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https://bugs.launchpad.net/bugs/814325
Title:
fuzzy and corrupted display after DPMS cycles
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