https://bugzilla.kernel.org/show_bug.cgi?id=19002

--- Comment #15 from Holger Lenz holger.lenz@onlinehome.de 2010-12-13 19:56:36 --- Did some more homework: Compiled kernel 2.6.37 rc5, taking care to enable KMS (new driver) by setting DRM_MODESET_KMS=ON. Unpatched and patched drivers show the same behavior: 1. Boot without nomodeset in the kernel cmd line: Blank screen before X is fully loaded. 2. Boot with nomodeset in the kernel cmd line: X loads with radeon/R600 classic driver is is reasonably quick in 2D, but a lockup occurs sooner or later. Switching from X to fb terminal usually does the trick quickly. The patched driver seems to lock up more quickly. Any ideas what I could do to help you fix the bug? Hardware is similar to Duncans: AMD K8, VIA K8T800 chipset, Radeon HD 4650 AGP (RV730)

Cheers Holger