Same issue for me. I've got an acer timeline 5810TZ with an ati 4300 and
an intel integrated. As the vga_switcheroo does not work properly, I'm
using a patch which desactivate the ati card so the bug happens on the
intel chipset.
When I close my computer,sometimes after a while when I reopen it, I can enter
my password in order to unlock the screen, I find the same screen I left but
nothing respond except the mouse. I can go to another tty, do what I want in
tty as restart gdm or restart the computer.
Sometimes, when I reopen the computer, the screen is black with backlight and I
cannot enter my password. I think it's the same bug.
>> lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series
Chipset Integrated Graphics Controller (rev 07)
01:00.0 VGA compatible controller: ATI Technologies Inc M92 LP [Mobility
Radeon HD 4300 Series] (rev ff)
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device 023f
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 44
Region 0: Memory at e0000000 (64-bit, non-prefetchable) [size=4M]
Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 5110 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
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https://bugs.launchpad.net/bugs/772925
Title:
Screen freezes after laptop lid closed for more than 1 minute
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