Olivier Bornet writes: > I'm now waiting on David for what to check. Go into drivers/video/atyfb.c, around line 3373 in function aty_init(), where it says: } else if (Gx == XL_CHIP_ID) { pll = 230; mclk = 120; Change that 'mclk' line to read: mclk = 63; Does this make things better? If this works, try larger values such as '83' or '100'. Tell me what does and does not work. Thanks. Later, David S. Miller davem@redhat.com