[Intel-gfx] display stays turned off after lid reopen

[ykzhao]

On Mon, 2009-11-23 at 01:11 +0800, Dirk Hohndel wrote:
> Running 2.6.32-rc8
Hi, Dirk
    Can you try the attached patch on the latest linux kernel and see
whether the issue still exists?
    Thanks.
> My laptop (Lenovo x200s w/ GM45) is configured to just turn of the
> screen when closing the lid.
> This used to work fine with 2.6.31
> With the 2.632 rc's I rather frequently run into the following:
> 
> when opening the lid the display doesn't get turned on
> sometimes I manage to type in the password (for the screensaver that I
> can't see) and then suspend the system - and after resume things work
> again. For some reason sometimes this fails (i.e., I can't make it past
> the screensaver - don't know why as the screen is off)
> 
> The only thing I can see in the system log is this:
> 
> > Nov 22 08:56:34 dhohndel-mobl kernel: [ 3670.913073] thinkpad_acpi: EC reports that Thermal Table has changed
> > Nov 22 08:56:43 dhohndel-mobl kernel: [ 3680.179197] [drm] LVDS-8: set mode 1440x900 c
> 
> And here's what I find in the X server log
> 
> (II) ThinkPad Extra Buttons: Device reopened after 1 attempts.
> (II) AT Translated Set 2 keyboard: Device reopened after 1 attempts.
> (II) TPPS/2 IBM TrackPoint: Device reopened after 1 attempts.
> (II) Sleep Button: Device reopened after 1 attempts.
> (II) Video Bus: Device reopened after 1 attempts.
> (II) Power Button: Device reopened after 1 attempts.
> 
> (this is a successful attempt where I sent the laptop to sleep and woke
> it up again)
> 
> All this is with Fedora 12 and my own own kernels built from official
> git trees.
> 
> > X.Org X Server 1.7.1
> > Release Date: 2009-10-23
> > X Protocol Version 11, Revision 0
> > Build Operating System:  2.6.18-164.2.1.el5 
> > Current Operating System: Linux  2.6.32-rc8-00011-ga8a8a66 #26 SMP Sun Nov 22 07:35:39 PST 2009 i686
> > Kernel command line: ro root=/dev/mapper/luks-ccc3e7c5-97b6-44c2-999b-bb9278ef379f rhgb quiet SYSFONT=latarcyrheb-sun16 LANG=en_US.UTF-8 KEYTABLE=us
> > Build Date: 05 November 2009  07:43:20PM
> > Build ID: xorg-x11-server 1.7.1-7.fc12 
> > Current version of pixman: 0.16.2
> > ...
> > 
> > (--) PCI:*(0:0:2:0) 8086:2a42:17aa:20e4 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller rev 7, Mem @ 0xf2000000/4194304, 0xd0000000/268435456, I/O @ 0x00001800/8, BIOS @ 0x????????/131072
> > (--) PCI: (0:0:2:1) 8086:2a43:17aa:20e4 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller rev 7, Mem @ 0xf2400000/1048576, BIOS @ 0x????????/65536
> > 
> 
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