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Debian 4 freezes on PCI Radeon 9250
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Author:  luky-amiga [ Sun Jan 06, 2008 9:18 am ]
Post subject:  Debian 4 freezes on PCI Radeon 9250
Hi! I'm lucky Pegasos II G4 user, I switched from AGP Radeon 8500LE to PCI Radeon 9250 (no noise, passive cooling), but my Linux doesn't work now. I must manually change xorg.conf to be able to boot (ls pci and replace device settings), but Debian 4 freezes after few seconds in KDE, I tried a lot of xorg.conf changes. Now I downloaded fresh new net install Debian 4.0 R2 and new Debian again freezes after few seconds in GNOME - graphics is not updated, shortcuts for shutdown are not working, mouse doesn't move - I must switch off my Pegasos II. Radeon 9250 works with MorphOS without any problem, even better, I can use 2 gfx cards (PCI Radeon 9250 and AGP Voodoo3) at once :-) Linux worked only on my old R8500LE, but it makes noise (active cooling). Is Debian 4 working with PCI Radeon cards on Pegasos II? I hope I don't have to buy a new Radeon card.
Author:  CLR [ Sun Jan 06, 2008 12:11 pm ]
Post subject: 
On my PegasosII/Radeon9250/128 Debian Etch works without problems.
Author:  luky-amiga [ Sun Jan 06, 2008 12:31 pm ]
Post subject: 
But it's AGP Radeon, isn't it? I have problem with PCI Radeon card.
Author:  ironfist [ Mon Jan 07, 2008 12:45 am ]
Post subject: 
From an OS perspective this doesn't matter since
the AGP port is connected as PCI.

That's why xorg.conf must contain BusType PCI.
Make sure you have that line somewhere.
Author:  Neko [ Mon Jan 07, 2008 5:46 pm ]
Post subject: 
Quote:
From an OS perspective this doesn't matter since the AGP port is connected as PCI.
Actually it does because X.org drivers are stupid and check the card capabilities based on chipset, configuration space and *expected* bus combinations, not the ACTUAL PHYSICAL bus on the system.

So if you plug an AGP chipset into a PCI board, X.org swizzles it and thinks, oh this is an AGP chipset and says it's capable of supporting AGP (and probably hundreds of other impossible features), I will try setting up the AGP GART on it, and BOOM.
Quote:
That's why xorg.conf must contain BusType PCI.
Make sure you have that line somewhere.
In theory his card should just work, Radeon PCI are known as Radeon PCI to X.org. I'm not too sure why it won't work in a Pegasos.. but the most likely issue for Efika users is that it's a 5V PCI card and the Efika needs 3.3V devices. If it's a true 3.3V card, then it may simply be designed wrong.

There are very, VERY few systems in the world that actually expose 3.3V PCI slots (except high end servers) that can take a graphics card so board designers simply don't design or test for these scenarios when there are a billion x86 PCs in the world with 5V signalling.

Back to the Pegasos, well.. maybe it's bad luck, a broken card of some other variant? It could be a symptom of a dying processor or northbridge/southbridge combination, too.. Linux seems far more "fussy" about this kind of thing than MorphOS ever was.
Author:  luky-amiga [ Tue Jan 08, 2008 12:10 am ]
Post subject: 
Thanks for advice. Nothing helps, X.org is still crashing with PCI Radeon 9250.
I switched back to my old good AGP Radeon 8500LE, it's a lot faster (AmiGOD2/MorphOS gfx results :-) ... 128bit) so it's ok.
Quote:
It could be a symptom of a dying processor or northbridge/southbridge combination, too..
I hope that it's not a symptom of dying Pegasos... I need my Pegasos for life :-)

Debian 4 works without problems with AGP R8500LE.
Author:  Neko [ Tue Jan 08, 2008 4:22 am ]
Post subject: 
Quote:
I hope that it's not a symptom of dying Pegasos... I need my Pegasos for life :-)
I hope not too. I think this is the most unlikely scenario but it's possible.

Do you have any extended error logs of how X.org crashes with the PCI Radeon? It would be useful to see what it expects and what it does when it encounters this board..

I assume you do not have an AGP Radeon attached at the same time?

And that the firmware initializes it correctly (with a console that works) when connected singly?

Which card does the firmware initialize if you plug in both?
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