corrupt video when using uswsusp s2disk

[Derek Broughton]

David Vincent wrote:

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> Derek Broughton wrote:
>> David Vincent wrote:
>> 
>>> This is another bump to a thread I'm hoping to keep in view.  I've not
>>> had any replies to this yet - here's hoping some of you are just shy in
>>> posting the solution.  :)
>>>
>>>> here's my problem.
>>>>
>>>> on a certain machine with an NVidia Go5700 graphics adapter, the
>>>> nvidia-glx-new driver and an LCD display at 1600x1050, when i hibernate
>>>> with uswsusp (s2disk) i get a corrupt video display while the
>>>> hibernation is taking place.
>> 
>> _While_ it's taking place???  When you resume, is the video fine?
>> 
>> If so, I'm afraid you just have to put up with it.  By definition, the
>> system is unable to do anything to maintain your video once you start the
>> hibernation process - the system is, in essence, already stopped and all
>> that's still working is the hibernation process itself.  While it might
>> not be a bad idea to simply turn off the display as soon as it starts to
>> hibernate, it _is_ possible to get some debugging information if
>> hibernation fails, so that probably isn't the best solution.
> 
> Correct.  While uswsusp is writing the image to disk the video is
> corrupt.  One of the cool features of uswsusp is I can hit the backspace
> key to cancel hibernation and return to my desktop if I realize I need
> to continue working - thus I feel the system is not totally stopped -
> also doesn't it set the video mode *before* stopping the machine?

Yes, it should - I just feel that it's now abandoned any attempt to control
your display, and you shouldn't be surprised what shows up there :-(

Being able to cancel the hibernation just means it's left one small trap to
shortcut the whole process and put you back into the restart.
-- 
derek