I have a PowerColor HD3450 model AX3450 256MD2-H In order to resolve make xrandr commands such as xrandr --output DVI-I_2/analog --left-of VGA_1 work properly Option "HPD" "off" is required. [ 0.319700] (II) Setting vga for screen 0. [ 0.319849] (**) RADEONHD(0): Depth 24, [ 0.319867] (--) framebuffer bpp 32 [ 0.319914] (**) RADEONHD(0): Option "HPD" "off" [ 0.319976] (**) RADEONHD(0): Selected ShadowFB. [ 0.320004] (WW) RADEONHD(0): !!! Option HPD is set !!! This shall only be used to work around broken connector tables. Please report your findings to radeonhd@opensuse.org [ 0.320048] (II) RADEONHD(0): Unknown card detected: 0x95C5:0x1787:0x2252. If - and only if - your card does not work or does not work optimally please contact radeonhd@opensuse.org to help rectify this. Use the subject: 0x95C5:0x1787:0x2252: <name of board> and *please* describe the problems you are seeing in your message. [ 0.320082] (--) RADEONHD(0): Detected an RV620 on an unidentified card [ 0.320188] (II) RADEONHD(0): Mapped IO @ 0xfdee0000 to 0x7f9bea023000 (size 0x00010000) [ 0.320315] (II) RADEONHD(0): PCIE Card Detected [ 0.320361] (II) RADEONHD(0): Getting BIOS copy from legacy VBIOS location [ 0.321426] (II) RADEONHD(0): ATOM BIOS Rom: SubsystemVendorID: 0x1787 SubsystemID: 0x2252 IOBaseAddress: 0xee00 Filename: Test.bin BIOS Bootup Message: RV620 GDDR2_64BIT 81129OAH.SEK