Interesting SiSUSB driver bug

Martin Langhoff martin at laptop.org
Tue Nov 23 14:48:26 PST 2010


The SiSUSB devices are very popular amongst OLPC people, so I've done
some work to enable the driver and autoconfiguration in recent OS
builds.

In our testing however we've bumped into an interesting bug where in
some cases the driver forgets to 'paint' changed areas to the card.
Seems it's buffering the changes and flushing only 'damaged' areas,
and the damage detection is incomplete.

A more complete bug description, including xorg.conf and steps to
repro is at https://bugzilla.redhat.com/show_bug.cgi?id=656508

It's interesting to note that under Sugar it's very visible. The Gnome
desktop has a lot more things moving at any given time so things get
flushed quickly.

Is there a current maintainer for this driver?

cheers,


martin
-- 
 martin at laptop.org -- School Server Architect
 - ask interesting questions
 - don't get distracted with shiny stuff  - working code first
 - http://wiki.laptop.org/go/User:Martinlanghoff


More information about the xorg-devel mailing list