What Brice said describes my problem perfectly:
"I can change my resolution up or down as many times as I like using the xrandr
command line tool via something like:
xrandr --output VGA --mode 1024x768
However, if I use the Screen Resolution applet to do the same thing, on
hitting Apply the screen starts flashing black / tan very fast (more
than 20 cycles/sec). X is unresponsive to most input and the mouse is
not visible, but I can switch to a vt console. X can be killed but on
restart it resumes the flashing behavior. Or, if gdm is shutdown
instead, the same thing happens when restarting either X or gdm. It
requires a reboot to get everything back to normal."
lspci -vv:
00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated
Graphics Controller (rev 02) (prog-if 00 [VGA controller])
Subsystem: Lenovo Unknown device 1010
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin A routed to IRQ 16
Region 0: Memory at d0000000 (32-bit, non-prefetchable) [size=1M]
Region 2: Memory at c0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 3400 [size=8]
Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0
Enable-
Address: 00000000 Data: 0000
Capabilities: [d0] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
** Attachment added: "lshw-the_edge.txt"
http://launchpadlibrarian.net/17494585/lshw-the_edge.txt
--
Reducing resolution on 965G using Screen Resolution locks system up with
flashing/blinking screen
https://bugs.launchpad.net/bugs/224508
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