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Old 06-06-05, 03:17 PM   #1
Voluspa
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Default Success (after tweak) Acer Aspire 1520 (1524) WLMi notebook

Scenario: Brand new Acer Aspire 1524 WLMi notebook (GeForce FX Go5700, 64MB)
Problem: White screen on tty-s and after leaving X (only reboot fixes it)
Solution: modprobe nvidia NVreg_SoftEDIDs=0 NVreg_Mobile=2

Odd thing is that NVreg_Mobile=2 should be used on "non-Compal Toshiba laptops" only, according to the nvidia README.txt. I should have used a 3 for "all other laptops". But the 2 is the _only_ working option here, in the range from nothing to 5.

Long story:

First I experienced that the only driver that didn't produce a white screen on tty switches and after leaving X was the 6111. But the driver had a working life (compile and runtime) of kernel 2.6.9 maximum - with a few patches. I'm in a pure x86_64 environment by the way, AMD64 Athlon 3400+, and gcc compiled without multilib.

Drivers 6629 and all the way up to 7664 do the "white screen" thingie without the fix mentioned above. And believe me, this is the only working fix. No kernel boot parametres, xorg.conf settings or horoscope readings could clear the issue. I tried it all until, out of pure resignation, I began stepping through the NVreg_Mobile options.

Now, having gotten rid of the whiteness show-stopper, I can use IgnoreEDID in xorg.conf to set up the 15.4" widescreen TFT in a nice 1280x800 mode. But that's another story, with the modelines and all, and not related to the whiteness bug. When I talk about a white screen, I mean: First totally white, then after some seconds vertical coloured stripes begin to emerge, getting stronger and more by the minute.

I bought this notebook to do 3D work, so it is a great relief that I now can run kernel 2.6.11.11 and the nvidia 7664 driver. After having read this message board sporadically the last couple of years, and spotted a few good information posts, I felt it prudent to share my success story here.

Mvh
Mats Johannesson
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Old 06-06-05, 07:52 PM   #2
voRia
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Default Re: Success (after tweak) Acer Aspire 1520 (1524) WLMi notebook

man, i love you!
My white screens on my acer aspire 1511 are gone forever (i hope)!
Thanks for the tip!
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Old 06-11-05, 08:34 PM   #3
voRia
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Default Re: Success (after tweak) Acer Aspire 1520 (1524) WLMi notebook

I've noticed that with this module's options on and DPMS enabled in xorg.conf, when the screen goes to power off, the only way to have it restored is to switch to any vt and then back to x server (During this "switch" i see a white screen again, but this is the only one i've had). Minor problem however.
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Old 06-16-05, 12:26 AM   #4
Voluspa
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Default Re: Success (after tweak) Acer Aspire 1520 (1524) WLMi notebook

Yes, it is a minor problem, but nevertheless a nuisance. I've introduced a "warning-sign" by reinstating the old blanking behaviour (which I usually turn off) some minutes before the screen goes off completely. So if I really do want to continue working I'll just tap any key or move the mouse cursor. From my xorg.conf:

Section "ServerFlags"
[...]
# Basic blanker... Will kick in after 10 minutes if not changed here...
# Same as xset s <time in seconds>
Option "BlankTime" "10" # Screen blanking. Time is in minutes here.
# Delete anything "xscreensaver" in gnome etc!

# Real blanker... _MUST_ have Option "DPMS" in the Monitor section!
# Same as xset +dpms <options> but these times are in minutes (not
seconds)
Option "StandbyTime" "15" # Should blank the screen (but turns it off)
Option "SuspendTime" "16" # Should have no real effect (but turns if off)
Option "OffTime" "17" # Turns the screen off

The blanking turns off all graphics, but not the backlight. So the screen looks greyish five minutes before going black (off).

Another effect of this whiteness fix is that context switching like Ctrl-Alt-[plus/minus] takes much longer before the screen is restored than usual. You see that after doing the Ctrl-Alt-Fn back and forth also.

Ah, well.

Mvh
Mats Johannesson
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Old 07-31-05, 10:44 AM   #5
Gerhard Bley
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Default Re: Success (after tweak) Acer Aspire 1520 (1524) WLMi notebook

Thank you!

Very helpfull on Toshiba Laptop S 3000-100 with Geforce2 GO 16MB

with SuSE 9.3 Kernel 2.6.11.4-21.7-default and driver NVIDIA...7667

Gerhard Bley
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Old 08-01-05, 08:08 PM   #6
daugirdas
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Default Re: Success (after tweak) Acer Aspire 1520 (1524) WLMi notebook

I added this to my hoary's (amd64) /etc/modprobe.d/nvidia-kernel-nkc.

However that doesn't fix the problem for me. It just becomes different. Instead of having darkening white screen now I get a few blinking green cubes on black screen.

To Voluspa: do you use framebuffer (I use vga=791)?
The only difference is that I have Aspire 1522WLMi. In other words, my CPU is 3000+, everything else the same.

I run whatever version of nvidia shipped with hoary.

Edit: this perfectly works without framebuffer. Thats some good news!

Nvidia, PLEASE ADD FRAMEBUFFER SUPPORT!!!!!!

Last edited by daugirdas; 08-02-05 at 05:19 AM.
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