Re: Xorg !!! And ATI
From: Andy Green (fedora_at_warmcat.com)
Date: 05/31/04
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To: For users of Fedora Core releases <fedora-list@redhat.com> Date: Mon, 31 May 2004 08:57:40 +0100
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On Monday 31 May 2004 01:39, Timothy Murphy wrote:
> Andy Green wrote:
> >> XORG is the problem:!!!!!!!!!!!!!!!!!!!!
> >
> > How did you work that out? That's the second time in two days I see
> I agree with the OP.
IIRC you were the first person mentioned above ;-)
> The Xorg "ati" driver appears to me to be deficient,
> at least with the ATI Rage Mobility card.
> I am also unable to get more than 8 bits at 1024x480
> on my Sony C1VFK Picturebook with Xorg under FC2,
> whereas I had 16 bits with this screen
> with XFree86 under FC1.
That is an unusual resolution, I wonder if that is something to do with the
problem. How much video memory is on the video card? AGP apeture size in
BIOS? When you ask for 16 bits NOT using the config from yesteryear, what do
you see in the xorg log file as the reason it rejected 16bpp? Did you try 32
or 24 bpp? What happens if you ask for the same deal using a "normal"
resolution like 1024x768 (useless as that may be on your widescreen display).
> If I use the same config file (calling it xorg.conf)
> that I used successfully with XFree86 with DefaultDepth 16,
> I get a shrinking black oval which becomes a blank white screen.
> But there is no error indicated in Xorg.0.log .
> According to this, all is well.
I have seen this on my Dell (using XF86 at that time....) it seems to be
caused by the video chip stopping driving the LCD while the backlight is
still on. From X's point of view everything IS well, it asked for such and
such a video mode and as far as it can tell, got it. You can try Fn-F8 or
whatever it is in your BIOS to flip between CRT and LCD, this something
resets the chip from the BIOS code providing output again.
> In my view, that must be a bug in Xorg.
Well, xorg's ATI driver seems to have changed functionality from what you were
last using. It can be a bug or just something changed: since xorg IS XFree86
branched at a certain point blaming "xorg" makes no sense to me.
- -Andy
- --
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