Hi! I tested the latest radeonhd with this card - Xorg doesn't start with it it, complaining in log: ========================= (WW) RADEONHD(0): Unknown card detected: 0x71C5:0x103C:0x30A3. Your card might not work or might not work optimally. To rectify this, please contact MAILINGLIST. Include your X log and the full name of the device. (--) RADEONHD(0): Detected an M56 on an unidentified card (EE) RADEONHD(0): Cannot map connectors on an unknown card! ========================= Here is the output of conntest (with only the panel connected): ========================= rhd_conntest: v1.1.0, git branch master, commit 8c6d1b46 Checking connectors on 0x71C5, 0x103C, 0x30A3  (@01:00:00):   Load Detection: RHD_OUTPUT_NONE   HotPlug: RHD_HPD_NONE getDDCSpeed: Clock: 426000 Prescale: 0x7f21 I2CStatus: 2 getDDCSpeed: Clock: 426000 Prescale: 0x7f21 I2CStatus: 1 getDDCSpeed: Clock: 426000 Prescale: 0x7f21 I2CStatus: 2   DDC: RHD_DDC_1   LVDS Info:         18bits, dual link, LDI Panel found.         Power Timing: 0xF9F, 0x00D, 0x03, 0x19, 0x1F4         Macro: 0x0C720407, Clock Pattern: 0x0063 ========================= The dump of BIOS is also attached. Let me know if you need more information/tests. Thank you for your work. Regards, Kirill