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Old 04-03-06, 10:57 AM   #1
Figti
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Default Display melting after hibernate (pictures inside)

I'm confronted with a strange (yet scary) behaviour after waking up from hibernate (aka suspend to disk).
Laptop is a Toshiba 5105-S501. Graphic card is a GeForce4 440Go. This occurs whatever the driver (7667 or 7676; can't try the 8xxx due to other issue) and whatever the kernel : 2.6.15 or 2.6.16. I haven't tried other combinations yet.

Additionnaly, I wasn't able to consistently reproduce the bug. Sometimes it happens, sometimes it doesn't (not good ).

When it occurs, the PC boots, grub starts the kernel, kernel retrieves the suspend-to-disk data and handles the ACPI/interruptions stuff. Next I get a white screen "melting" to black. Scary. Here are pictures:


This is 5sec after white screen.



This is 15sec after white screen



This is 30sec" after white screen

It looks like some capacitor is being drained... until fade-out. I havn't tried to stay in this state for more than a minute cuz this display makes me fear it might destroy the screen.
Note that "sometimes" the computer resumes from hibernate correctly. I couldn't find when 'til now.
I tried different things:
*loads of the machine (either with a tiny terminal in gnome, or with OpenOffice/15_Fireox_windows/Movie_playing/+++ all at the same time). This has no effect. Sometimes it wakes up well, sometimes not.
*giving the 'noapic' argument to the kernel. Same thing.
*hibernate/resume many times with only 2 firefox windows and a gnome terminal. 8 consistent & perfect hibernate/resume before I decided it wasn't willing to fail -this time- .

This is strange... but annoying. Did anyone already encountered the same ? (or... maybe already found a way to fix it?)
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Old 04-03-06, 11:41 AM   #2
beardotta
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Default Re: Display melting after hibernate (pictures inside)

Quote:
Originally Posted by Figti
I'm confronted with a strange (yet scary) behaviour after waking up from hibernate (aka suspend to disk).
8<-----------
Quote:
This is strange... but annoying. Did anyone already encountered the same ? (or... maybe already found a way to fix it?)
I used to have this on a Dell 8200 using early swsuspend2 patches. Stopped happening under later Suspend2 patches.

If you're using the (sadly, inferior) in-kernel suspend you could try the external Suspend2 patch.

BTW, the melting didn't seem to do any damage.

Last edited by beardotta; 04-03-06 at 11:43 AM. Reason: Add more info
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Old 04-03-06, 05:09 PM   #3
Figti
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Default Re: Display melting after hibernate (pictures inside)

Thanks for this input. This is actually quite relieving.
However I'm used to follow Debian 'apt-get update' policy, therefore I'm not so keen on compiling the kernel by hand... I once used my computer this way but I fear I don't have time for this anymore .
Is there any other workaround this issue?

Still thank you for your help!
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Old 05-06-06, 04:22 AM   #4
Figti
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Default Re: Display melting after hibernate (pictures inside)

a quick *bump* in case it rings a bell to anyone...
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