ubuntu-x-swat team mailing list archive

[elik <706386@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-intel

I'm not sure the bug is with xserver-xorg-video-intel, but I'll explain
why it think it might be.

I get this issue with the options Blank Screen for When laptop lid is
closed in AC power in Power-Managent and with Do Nothing and Blank
screen in Battery Power. Interestingly enough (I think, at least), if
suspend is chosen, the laptop suspends correctly and brings back the
screen correctly on resume.

I tried alt-sys-req to reboot xserver and I tried going to a tty (ctrl-
alt-f1), but it never brought the screen back on.

The machine is not crashed and I can ssh to the machine. I used that to
try a few interesting thing while the screen was blank.

I found this thread (a bit old, but still):
http://ubuntuforums.org/showthread.php?t=358432. I tried to "vbetools
dpms on", but it didn't help.

https://wiki.ubuntu.com/X/Troubleshooting/BlankScreen has an interesting
article on intel graphics which I followed. Even though it mentioned was
marked as a solution for machine lock-up (my machine doesn't lock-up per
se), I tried the ForcePipeA quirck
(https://wiki.ubuntu.com/X/Quirks#Force Pipe A Quirk), but when I did,
Xorg reported that the option did not exist.

I had a whole bunch of errors in Xorg logs: (EE) FBDEV(0): FBIOPUTCMAP:
Invalid argument. I looked it up and found no bug reports that pointed
in the direction of the bug I'm having, so I decided to let it be.

Finally, on one bug report, I found someone talking about installing the
dbg version of the package, which I did. I played with
"intel_reg_dumper" a little bit, wrote a bash script that track changes
to the registers (probably not exactly the most effective option, but
meh). Basically, what I did is that I ran "intel_reg_dumper" before and
and after closing the lid (and causing the bug). I found somehting, but
I don't know what it means... VGACNTRL would change from VGACNTRL:
0x22040000 (enabled) to VGACNTRL: 0x80000000 (disabled). I couldn't find
a tool to mess with that directly and confirm if it's part of the
problem. Most likely it's the result of something not being done
properly higher up the pipe... but I only know that much about the inner
workings of linux (very limited).

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xserver-xorg-video-intel 2:2.12.0-1ubuntu5.1
ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8
Uname: Linux 2.6.35-24-generic i686
Architecture: i386
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1024x768
 edid-base64:
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes: 
 edid-base64:
Date: Sat Jan 22 14:17:00 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
Lsusb:
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: IBM 2887W5H
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-24-generic root=UUID=9e733a0c-b087-4f98-948b-0d11b228ba40 ro quiet splash
ProcEnviron:
 LANG=en_CA.utf8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-intel
dmi.bios.date: 11/15/2005
dmi.bios.vendor: IBM
dmi.bios.version: 1VET67WW (1.25 )
dmi.board.name: 2887W5H
dmi.board.vendor: IBM
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: IBM
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnIBM:bvr1VET67WW(1.25):bd11/15/2005:svnIBM:pn2887W5H:pvrThinkPadR51:rvnIBM:rn2887W5H:rvrNotAvailable:cvnIBM:ct10:cvrNotAvailable:
dmi.product.name: 2887W5H
dmi.product.version: ThinkPad R51
dmi.sys.vendor: IBM
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro:             Ubuntu
 codename:           maverick
 architecture:       i686
 kernel:             2.6.35-24-generic

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: 855gm apport-bug i386 intel maverick r51 thinkpad

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https://bugs.launchpad.net/bugs/706386

Title:
  Screen blanks on lid close, never unblank (reboot required)