On Mon, Oct 20, 2003 at 11:13:12AM +0300, Alexey E. Suslikov wrote:
> keywords: openbsd, x11, i830, ring buffer, lockup
>
> > It just occurred to me where I had seen this type of black screen problem
> > before. It happens when using the "vesa" driver with an 845G. We work
> > around this in the i810 driver by remembering the initial video mode
> > and simply re-initialising it when exiting/VT switching instead of using
> > the VBE save/restore mechanism. This workaround is only actived for
> > 845G hardware. You could try enabling it for all hardware by changing
> > this line in i830_driver.c from:
> >
> > if (!I845G_VBE_WORKAROUND || !IS_845G(pI830)) {
> >
> > to:
> >
> > if (!I845G_VBE_WORKAROUND) {
>
> hmmm... my yesterdays reply was lost somewhere... ok, let's repeat :)
>
> turning on I845G_VBE_WORKAROUND magically SOLVES the problem on
> 4.3.99.14 in both accel and noaccel setups:
>
> VideoRam
> default(8192) 2048 32768
> Accel ok ok ok
> NoAccel ok ok ok
> NoAccel+SWcursor ok ok ok
I just made the same modification on my NetBSD (-current) Dell laptop
with i830 chipset.
Everything seems to work fine now ... I can restart X without
rebooting the machine and VT switching works flawlessly.
Great job,
Thanks.
--
Nicolas Joly
Biological Software and Databanks.
Institut Pasteur, Paris.
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