Re: PowerPC agpmode issues

From: Herminio Hernandez, Jr. <hidden>
Date: 2016-09-19 09:13:52
Apologies for the previous email.

What I was trying to say was I just recently installed Debain on my
PowerMac G5. I upgraded to sid and install the nonfree firmware. After
reboot I noticed that GPU acclleration was broken and I recieved the
following error

[   10.428542] [drm] Loading R300 Microcode
[   10.486631] radeon 0000:f0:10.0: firmware: direct-loading firmware
radeon/R300_cp.bin
[   10.486865] [drm] radeon: ring at 0x0000000000010000
[   10.634417] [drm:.r100_ring_test [radeon]] *ERROR* radeon: ring test
failed (scratch(0x15E4)=0xCAFEDEAD)
[   10.634526] [drm:.r100_cp_init [radeon]] *ERROR* radeon: cp isn't
working (-22).
[   10.634538] radeon 0000:f0:10.0: failed initializing CP (-22).
[   10.634546] radeon 0000:f0:10.0: Disabling GPU acceleration
[   10.781302] [drm:.r100_cp_fini [radeon]] *ERROR* Wait for CP idle
timeout, shutting down CP.
[   10.932698] [drm] radeon: cp finalized
[   10.932813] radeon 0000:f0:10.0: (r300_asic_reset:425)
RBBM_STATUS=0x80010140
[   11.432810] radeon 0000:f0:10.0: (r300_asic_reset:444)
RBBM_STATUS=0x80010140
[   11.928815] radeon 0000:f0:10.0: (r300_asic_reset:456)
RBBM_STATUS=0x00000140
[   11.928851] radeon 0000:f0:10.0: GPU reset succeed
[   11.928914] [drm] radeon: cp finalized
[   11.935052] [drm] radeon: ttm finalized
[   11.935061] [drm] Forcing AGP to PCI mode
[   11.935124] radeon 0000:f0:10.0: Invalid PCI ROM header signature:
expecting 0xaa55, got 0x0000
[   12.037448] [drm] Not an x86 BIOS ROM, not using.
[   12.037490] [drm] Using device-tree clock info
[   12.037500] [drm] Generation 2 PCI interface, using max accessible memory
[   12.037515] radeon 0000:f0:10.0: VRAM: 256M 0x00000000B0000000 -
0x00000000BFFFFFFF (64M used)
[   12.037525] radeon 0000:f0:10.0: GTT: 512M 0x0000000090000000 -
0x00000000AFFFFFFF
[   12.037538] [drm] Detected VRAM RAM=256M, BAR=256M
[   12.037544] [drm] RAM width 128bits DDR
[   12.037791] [drm] radeon: 64M of VRAM memory ready
[   12.037798] [drm] radeon: 512M of GTT memory ready.
[   12.037840] [drm] GART: num cpu pages 8192, num gpu pages 131072
[   12.039662] [drm] radeon: 1 quad pipes, 1 Z pipes initialized.
[   12.039690] [drm] PCI GART of 512M enabled (table at 0x0000000062980000).
[   12.039820] radeon 0000:f0:10.0: WB enabled
[   12.039834] radeon 0000:f0:10.0: fence driver on ring 0 use gpu addr
0x0000000090000000 and cpu addr 0xc000000147010000
[   12.039849] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[   12.039855] [drm] Driver supports precise vblank timestamp query.
[   12.039902] [drm] radeon: irq initialized.
[   12.040079] [drm] radeon: ring at 0x0000000090010000
[   12.188699] [drm:.r100_ring_test [radeon]] *ERROR* radeon: ring test
failed (scratch(0x15E4)=0xCAFEDEAD)
[   12.188806] [drm:.r100_cp_init [radeon]] *ERROR* radeon: cp isn't
working (-22).
[   12.188820] radeon 0000:f0:10.0: failed initializing CP (-22).
[   12.188827] radeon 0000:f0:10.0: Disabling GPU acceleration
[   12.335530] [drm:.r100_cp_fini [radeon]] *ERROR* Wait for CP idle
timeout, shutting down CP.
[   12.335670] [drm] radeon: cp finalized

I noticed the GPU was set to PCI mode however I did not set
radeon.agpmode=-1 in yaboot. I then installed Lubuntu 16.10 along side
Debian. I noticed that GPU was working and it was not set to force PCI
mode. Has there been a change to kernel in Debian to force this by default?
If so it looks like it is breaking on certain G5 machines. I am attaching
bothe dmesg files for review.

Thanks and sorry for the previous garbled email.

Herminio

2016-09-19 1:38 GMT-07:00 Herminio Hernandez <herminio.hernandezjr@gmail.com
Attachments

debian.dmesg [application/octet-stream] 43839 bytes
lubuntu.dmesg [application/octet-stream] 46550 bytes
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