https://bugs.freedesktop.org/show_bug.cgi?id=26891 --- Comment #7 from shirk@xxxxxxxxxxx 2011-05-19 03:30:41 PDT --- (In reply to comment #3) > I'm booting an imac12,2 in UEFI mode (need a "Run EFI in physical mode" patch > before doing so), > here's how : > 1) boot from latest ubuntu live CD (hold alt, or c, at boot) > 2) dump the bios > dd if=/dev/mem of=vbios.bin bs=65536 skip=12 count=1 > 3) move it to your partition's /lib/firmware/radeon/vbios.bin > 4) use your patch, but move the radeon_read_bios_from_firmware > call before all other calls to get the bios (force using vbios.bin) > Thats exactly what I did on my MBP however the screen flicker remains.. I'm pretty sure the BIOS is valid (dmesg identifies it as ATOM BIOS: Apple) and strings revealed data like "Whistler Pro" which IIRC is the type code used by the Radeon HD 6xxx series. Since JÃrÃmy has a working setup with GPU acceleration I can only suspect a problem in the microcode. iMac12,2 has a Radeon HD 6970M which utilizes the CAYMAN microcode while my Radeon HD6750M is using TURKS. So I'm stuck with working but non-accelerated radeondrmfb. -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
