<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Radeon KMS fails with inaccessible AtomBIOS on systems with (U)EFI boot" href="https://bugs.freedesktop.org/show_bug.cgi?id=26891#c53">Comment # 53</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Radeon KMS fails with inaccessible AtomBIOS on systems with (U)EFI boot" href="https://bugs.freedesktop.org/show_bug.cgi?id=26891">bug 26891</a> from <a class="email" href="mailto:ben@b1c1l1.com" title="Benjamin Lee <ben@b1c1l1.com>"> Benjamin Lee</a> <pre>I can also confirm that Radeon KMS works on my MacBookPro8,2 with kernel version 3.8-rc6 and EFI stub boot. I also needed to add a device section to my xorg.conf. I don't see any video BIOS in /dev/mem so I guess it is loading from ACPI instead. Out of curiosity, I tried to load fglrx and it failed to find a valid VBIOS so fglrx must not have the ACPI loading method. blee@supra ~ $ sudo dd if=/dev/mem of=/dev/stdout bs=65536 skip=12 count=1 2>/dev/null | hexdump 0000000 ffff ffff ffff ffff ffff ffff ffff ffff * 0010000 [ 2.589927] [drm] Initialized drm 1.1.0 20060810 [ 2.589966] [drm] radeon defaulting to kernel modesetting. [ 2.589969] [drm] radeon kernel modesetting enabled. [ 2.590189] [drm] initializing kernel modesetting (TURKS 0x1002:0x6741 0x106B :0x00E2). [ 2.590226] [drm] register mmio base: 0xB0800000 [ 2.590229] [drm] register mmio size: 131072 [ 2.590253] ATOM BIOS: Apple [ 2.590264] [drm] GPU not posted. posting now... [ 2.599466] radeon 0000:01:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003 FFFFFFF (1024M used) [ 2.599472] radeon 0000:01:00.0: GTT: 512M 0x0000000040000000 - 0x000000005FF FFFFF [ 2.604787] [drm] Detected VRAM RAM=1024M, BAR=256M [ 2.604793] [drm] RAM width 128bits DDR [ 2.604843] [TTM] Zone kernel: Available graphics memory: 4042710 kiB [ 2.604846] [TTM] Zone dma32: Available graphics memory: 2097152 kiB [ 2.604849] [TTM] Initializing pool allocator [ 2.604858] [TTM] Initializing DMA pool allocator [ 2.604893] [drm] radeon: 1024M of VRAM memory ready [ 2.604896] [drm] radeon: 512M of GTT memory ready. [ 2.604917] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). [ 2.604920] [drm] Driver supports precise vblank timestamp query. [ 2.604982] radeon 0000:01:00.0: irq 45 for MSI/MSI-X [ 2.604993] radeon 0000:01:00.0: radeon: using MSI. [ 2.605028] [drm] radeon: irq initialized. [ 2.605033] [drm] GART: num cpu pages 131072, num gpu pages 131072 [ 2.605463] [drm] probing gen 2 caps for device 8086:101 = 2/0 [ 2.605470] [drm] PCIE gen 2 link speeds already enabled [ 2.605534] [drm] Loading TURKS Microcode</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>