HP

Workstation

Model	Graphics	Status	Distributions
xw4200 Workstation	FireGL V3100, FireGL V5100	Works
xw6200 Workstation	FireGL V3100, FireGL V5100	Works
xw8200 Workstation	FireGL V3100, FireGL V5100	Works
xw9300 Workstation (2x AMD Opteron Rev E)	FireGL 5200	works	Debian 4.0r3 , fglrx 8.44.3

Desktops

Model	Graphics	Status	Distributions	Notes
HP A1629.uk Pavilion	ATI Radeon Xpress 200	Unknown
HP t5735 Thin Client	ATI Radeon X1250	Works	Debian 4.x

Laptops

Model	Graphics	Status	Distributions	Notes
Pavilion L2005cu	XPRESS 200M	Works
Pavilion zv6000	XPRESS 200M 5955	Works	Fedora 7	Driver 8.24.8 is known to work, 8.25.18 and 8.26.18 are broken. You have to enable Sideport UMA and assign 128MB of memory as the chipset always reports it is equipped with 256MB no matter what you configure it to. Driver 8.40.4 works, but cannot suspend to ram or hibernate.
Special Edition L2000	XPRESS 200M 5955	Works
Compaq nx8220	Ati X600	Works
HP nw8240	Mobility Radeon X700	Works*	Ubuntu 08.04 (Hardy Heron)	fglrx v8.50.3 works fine. Suspend/Resume works if not using Compiz. For Compiz issue, see: Bug #960 --deragon 01:21, 15 July 2008 (CDT) Old comment: Tested under SUSE Factory with xorg 7.2, fglrx module/driver v8.35.5 patched to build with kernel 2.6.20 -- still can't get suspend-to-ram (s3) to work properly. OpenGL acceleration works fine at 1920x1600px but Google Earth caused a system hang, which I'll try to fix using fglrx v8.36 and changing settings with Catalyst.
HP nc6400	Ati X1300	Works	Gentoo	Tested under xorg 7.1 with xgl/beryl
HP nc8230	Radeon Mobility X600	Works	Debian/GNU unstable	Tested under Debian/GNU unstable under xorg 7.2-5, kernel 2.6.18-3-686-bigmem and running the ATI-supplied installation package v8.38.6. Works fine, haven't verified TV-out et al, but running dual x-servers (dual-head with diffrent resolutions) works fine.
HP nw8440	Radeon Mobility X1600	Works	Ubuntu 7.04
HP nx6125	XPRESS 200M 5955	Works	Gentoo Debian Etch Ubuntu 7.10	Hibernate (RAM), Vanilla-Kernel-suspend (disk) & TV-Out work out of the box (Kernel 2.6.23 & 8.42.3). Good OpenGL performance (even with compiz-fusion/AIGLX). LCD-brightness can only be changed in VT (Ctrl+Alt+F1 -> change brightness -> switch back to X works).
Compaq Presario R4125US	XPRESS 200M 5955	Works	Kubuntu 8.04	Working under Kubuntu 8.04 Hardy Heron. Xorg 7.3 Kernel 2.6.24-19. Driver version 8.51.3 manually extracted. Logout hangs till you issue the command: sudo /usr/sbin/update-rc.d -f atieventsd remove. Afterward no logout hangs. Haven't tested Suspend/Hibernate as I don't use these functions.