Problems with resumed suspend: Work (dual/external heads) <=> Home (built in laptop display)

[Jamie Jackson]

Hardware:
       product: Mobile 945GM/GMS, 943/940GML Express Integrated
Graphics Controller

Driver (I think this is what you're after, anyway):
(II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
	i810-dc100, i810e, i815, i830M, 845G, 852GM/855GM, 865G, 915G,
	E7221 (i915), 915GM, 945G, 945GM, 945GME, 965G, G35, 965Q, 946GZ,
	965GM, 965GME/GLE, G33, Q35, Q33,
	Mobile Intel® GM45 Express Chipset,
	Intel Integrated Graphics Device, G45/G43, Q45/Q43, G41

However, my problem is only when I resume to a different display
configuration (i.e., home <=> work). I don't have any problems
resuming to the same displays (e.g., work <=> work).

Actually, now that I think about it, I do have vague memories of
having a black display sometimes when suspending/resuming the laptop
display. Sometimes, I think I had to hard reset, or ssh in and
pm-suspend and re-resume it. My memory's fuzzy on this, but I'll see
if I bugged this issue.

Thanks,
Jamie

On Tue, Jun 23, 2009 at 2:05 PM, Andreas
Schildbach<andreas at schildbach.de> wrote:
> Hi Jamie,
>
> What's your hardware? Which video driver do you use?
>
> I've got a very similar problem, except that mostly only either the
> internal or the external display is deactivated after resume.
>
> Also, the problem can be reproduced without actually switching monitors
> (like in your case with home/work). Can you try again by just suspending
> and resuming without disconnecting the external monitor?
>
> Anyway, here is my bugreport:
>
> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/352708
>
> Best regards,
>
> Andreas
>
>
> On Thu, 2009-06-18 at 01:08 -0400, Jamie Jackson wrote:
>> (Ubuntu 9.04)
>>
>> At work, I've got dual head, external monitors (VGA, TDMS-1). If I
>> suspend there, and resume at home (using only built-in LVDS), I get a
>> black screen.
>>
>> I have similar problems when going in reverse.
>>
>> The only way I've been able to recover is via SSH and xrandr, however,
>> my home => work xrandr process is haphazard. While I can usually get
>> it to work, I can only get enough to give me a panel (on the wrong
>> screen, the VGA) to get to the gnome display config gui (where I can
>> finish the proper config, getting the panel on the main TDMS-1, and
>> the auxiliary display on the smaller VGA).
>>
>> When I need to resume at home, I usually bag it, and just hard reset.
>>
>> I've got a few questions:
>>
>> 1. Is there a way to get X to roam better (be smarter about detecting
>> and using displays on resume)?
>> 2. Alternatively, is there some xrandr sequence I can use that makes
>> the home => work transition less awkward?
>> 3. Also, alternatively, what's the sequence for the work => home
>> transition? (This one's a bit of a pain, because I've got to jump
>> through some hoops to SSH in at home, but if I had a sequence, I could
>> script it, and then maybe blindly run my script from a TTY.)
>>
>> Thanks,
>> Jamie
>
>
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