Mailinglist Archive: opensuse (880 mails)

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Re: [opensuse] video problem with an ancient laptop [SOLVED]
  • From: "Carlos E. R." <robin.listas@xxxxxxxxxxxxxx>
  • Date: Mon, 12 Aug 2013 04:49:23 +0200 (CEST)
  • Message-id: <alpine.LNX.2.00.1308120442350.5725@Telcontar.valinor>
Hash: SHA1

On Sunday, 2013-08-11 at 22:16 -0400, Felix Miata wrote:
On 2013-08-12 03:09 (GMT+0200) Carlos E. R. composed:

I will disable modeset and reboot.

What's your kernel line now that you have it working?

AmonLanc:~ # cat /proc/cmdline
root=UUID=c538c7a3-97ea-4eae-91fc-fdfea0fc1aca resume=/dev/disk/by-label/Swap
showopts splash=verbose console=tty1 loglevel=3 vga=791

Mmm... I see you use "vga=791" in the kernel line. I might try that, too.

The kernel or Grub Legacy observes that initially, but if KMS is not disabled, then EDID will tell kernel the mode to use and, unless there is a match, a mode switch will shortly follow text messages display. All this is without Plymouth. I don't every use it so don't know how it plays together with these parameters.

But my display has no EDID info, and I use grub2, without plymouth.

Bingo! That does it, vga=791. I thought we were to use display=...

That may be something Grub2 uses, but it does absolutely nothing here with Grub. If you want to tell KMS the mode you want in openSUSE, it's video= that takes the place of vga=. Maybe with yours, display= removal was the actual solution. Most of my systems are started using video=1152x864 along with vga=791 or vga=794, but 1152x864 and 794 put a native 1024x768 LCD into sleep mode.

No, the default after install had no "display=" parameter. I added that trying to solve the problem. The only config that worked so far has been the kernel line above.

instead, that's why I did not even try vga=...

Removing vga= from kernel line has no effect here.

Here I get a huge white band on the lower half of the display, as described in my first message. Yours works because you get the EDID info, mine does not have it, too old, I guess.

Maybe there is a way to provide locally that EDID info, so that it is not probed?

- -- Cheers,
Carlos E. R.
(from 12.3 x86_64 "Dartmouth" at Telcontar)

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