Re: kill -9 <pid of X>

Olaf Titz (olaf@bigred.inka.de)
Thu, 13 Aug 1998 22:06:59 +0200

> > VGAs which don't support a linear framebuffer are out here (and as a
> > band-aid can still be used with the old XFree86 servers).
> Or the driver can use mmap() to create a pseudo-linear framebuffer
> out of the banks. KGI does this.

What about bitplane modes? Okay, that's really sick ;-)

(When I first assembled the machine I'm now working on I didn't have
the right video card, so I put in an old, unsupported VGA. Yes I got
it to work with the vga16 driver and even in a reasonable resolution,
but it is flabbergasting how slow a K6/233 can get with the "right"
peripherals ;-)

> You'd get a little more speed out of having the X server sit right
> on top of the kernel and feed ioctls to /dev/fb, but the portability loss
> wouldn't (IMHO) be worth it.

OK, ioctls are suboptimal for various reasons, but MMIO access to the
hardware still has a stability risk, at least with poorly designed
VGAs which seem to be the majority. :-(

olaf

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