[parisc-linux] Re: Matrox Mystique video card caused Kernel Panic on HP Visualize 785/B2000 with rebuilt 2.6.8 kernel

[parisc-linux] Re: Matrox Mystique video card caused Kernel Panic on HP Visualize 785/B2000 with rebuilt 2.6.8 kernel

[Grant Grundler]

On Tue, May 31, 2005 at 11:09:05AM +0800, J. L. Lee wrote:
> I am a novice to Linux, especially the Debian variant and the HP 
> workstations. I am also not a programmer so afraid you have to be patient 
> with me.

no problem.
Please keep the parisc-linux list cc'd so the mail gets archived.

> You mentioned "The symptom is consistent with derefencing an address that's 
> not ioremapped. But it looks like ioremapped is being called in 
> initMatrox2(). You want to add printk's to make sure that's happening like 
> we expect."
> 
> I don't understand what you mean but if you can direct me to where I could 
> change the coding in the source code I will give it a try and let you know 
> the result.

What I meant was, in drivers/video/matrox/matroxfb_base.h
add a printk to mga_ioremap() and to mga_iounmap() so we know
what the virtual and physical addresses are and when to expect
the mappings to be valid.
Sorry, I don't have time to cook up a proper patch.

Please also build with CONFIG_FB_MATROX=m (as a module) so you can first:
	lspci -v
	cat /proc/iomem

then "modprobe maxtroxfb" once you are ready to crash the machine.


> ps. Yes, I have referred to the Graphics How-To. That is why I chose the 
> Matrox video card. I have S3 Virge too but there is no configurable S3 
> driver in the kernel configuration file.

Ok. If someone can tell me S3 Virge is compatible with another matrox
cards, I'd be happy to add it to the How-To.

hth,
grant
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[parisc-linux] S3 ViRGE

[Stuart Brady]

On Tue, May 31, 2005 at 11:09:05AM +0800, J. L. Lee wrote:
> I have S3 Virge too but there is no configurable S3 driver in the
> kernel configuration file.

virgefb seems to be for for Amigas only.  It might be worth trying the X
driver (which works for me on x86).
-- 
Stuart Brady
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RE: [parisc-linux] S3 ViRGE

[Joel Soete]

> 
> On Tue, May 31, 2005 at 11:09:05AM +0800, J. L. Lee wrote:
> > I have S3 Virge too but there is no configurable S3 driver in the
> > kernel configuration file.
> 
> virgefb seems to be for for Amigas only.  It might be worth trying the
X
> driver (which works for me on x86).
> -- 

Just for the record, I noticed that 2.6.11.11 patch contained:
[snip]
    [PATCH] Fix matroxfb on big-endian hardware
[snip]

Is it already part of 2.6.12-rc5?

Joel


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Re: [parisc-linux] matroxfb bugfix

[Stuart Brady]

On Wed, Jun 01, 2005 at 03:42:14PM +0200, Joel Soete wrote:
> Just for the record, I noticed that 2.6.11.11 patch contained:
> [snip]
>     [PATCH] Fix matroxfb on big-endian hardware
> [snip]
> 
> Is it already part of 2.6.12-rc5?

It's in the changelog for 2.6.12-rc2.

Has anyone tested it on parisc?  (Apparently the corruption only occured
in accelerated mode.)
-- 
Stuart Brady
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