Hi,
Several years ago, I started a thread about stability issues with hp
zx1 chipset and ATI FireGL X1 graphics adapter on ia64 platform [1].
As an attempt to minimize problems, a quirk was introduced to restrict
AGP mode to 2x [2]. This never solve the stability issues, as the real
cause was in fact incorrect settings of the selectable timer interrupt
frequency [3].
The attached patch thus removes the useless restriction on AGP mode.
Indeed, I'm running at full AGP 4x mode for several weeks now without
a problem.
The attached patch applies cleanly against 3.15-rc5.
Thanks,
?meric
[1] http://marc.info/?l=dri-devel&m=126494456828755&w=2
[2]
http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/commit/?id=a7f465f73363fce409870f62173d518b1bc02ae6
[3] http://marc.info/?l=linux-ia64&m=140077543819871&w=2
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