I can say that the problem is even more severe for me. I get hard locks if I don't use EXA on my T42 with a fresh install of Ubuntu 9.10. The live cd and install worked fine, then I logged in, connected to my wifi, enabled encrypted swap and rebooted. I could get to gdm, but then after authenticating the computer would hard lock. Using EXA allowed my to login successfully and everything seems to be working ok.
$ lspci|grep ATI 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500] (II) RADEON(0): Detected total video RAM=32768K, accessible=65536K (PCI BAR=131072K) (--) RADEON(0): Mapped VideoRAM: 32768 kByte (64 bit DDR SDRAM) -- (EXA and 32MB) certain windows drawn garbled when XAA is used https://bugs.launchpad.net/bugs/426582 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

