From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <9277a63275828f874be57eb858dc01bb@plan9.bell-labs.com>
From: "Russ Cox" <rsc@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
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Subject: [9fans] slow video fix
Date: Wed,  1 May 2002 10:21:12 -0400
Topicbox-Message-UUID: 831badf4-eaca-11e9-9e20-41e7f4b1d025

if you are suffering from problems with very slow
video, try taking usb and usbuhci out of your kernel
config file.

we think that a mismatch between some usb devices
and our driver is causing the usb cards to eat
all the bus bandwidth, which makes any bus
intensive operation (e.g., video memory writes)
really slow.

removing usb fixes the problem on our test machine.
if it doesn't fix your problems, please let us know
(mail 9trouble@plan9.bell-labs.com).

we'll put out a new boot floppy and release package
with this and the other accrued vga fixes once we
resolve this.

russ