Re: Re: [PATCH] New radeonfb fork

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Wed, 2003-04-09 at 14:38, torn@autistici.org wrote:

> During the kernel compilation  I encountered some problems due tu missing
> #defines. In detail, the probles was in the replacement of
> PCI_DEVICE_ID_PDC_1841 in .._PDC_ADMA100 and of .._CMD_680 in .._SII_680.
> Adding the old lines solved the problem. Maybe you are using a kernel
> patch that modifies that code, and you did the diff against that sources.
> Or (more probably) there is another logic reason I don't see.

Yah, my patch brings pci_ids.h to 2.4.21 version, I'll fix that in
the next patch release

> Another thing I must tell you is that with your driver, but also with the
> old radeonfb and with the xfree86 driver, some strange screen flicker
> occours sometimes. When this happens I see several undefined horizontal
> lines all over the LCD screen. Changing video mode a couple of times makes
> the screen return to normality. I guessed that this behavoir is linked to
> pixclock changes (changing the pixclock value via fbset 2 or 3 times makes
> the screen flicker, another couple of pixclock changes make everyting
> return to normality). Many people with notebooks with mobility M6s graphic
> cards reported this problem. With windows this never happens. This is VERY
> annoying.
> I hope I can help the driver developement, if you want me to try something
> in particular, just tell me.

Looks like the PLL isn't locking properly. The latest driver I'll
release (today hopefully) includes a workaround that _might_ help

> Paride
> torn@autistici.org
> 
> 
> 
> 
> 
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-- 
Benjamin Herrenschmidt <benh@kernel.crashing.org>


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