I have a packard bell dot m/a (radeon x1270) and have the issue described in this bug. My setup: * kernel 3.2 * libdrm 2.4.30 * mesa 7.11.2
I replaced the bios with a modded one that allow tweaking of video ram type. I tried two settings: uma only and uma+sideport. * UMA (256M) * No graphic corruption * No laggy window movement * glxgear fps ~= 360 * UMA+sideport (256M+64M) * Massive graphic corruption * Laggy window movement * glxgears fps ~= 200 A diff between dmesg output: $ diff dmesg.uma dmesg.uma+sideport 9c9 < [drm] Detected VRAM RAM=256M, BAR=256M --- > [drm] Detected VRAM RAM=384M, BAR=256M 11c11 < [drm] radeon: 256M of VRAM memory ready --- > [drm] radeon: 384M of VRAM memory ready 15c15 < [drm] PCIE GART of 512M enabled (table at 0x000000006C180000). --- > [drm] PCIE GART of 512M enabled (table at 0x000000006B800000). 31a32 > [drm] radeon: power management initialized Hope it can help. I can make more test if needed. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/556782 Title: [rs690m] Graphics corruption with ati x1200 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/556782/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
