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Date: Sat, 7 Oct 2017 15:06:52 +0000
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https://bugs.freedesktop.org/show_bug.cgi?id=3D99851
--- Comment #55 from erhard_f@mailbox.org ---
Joshuas comment #54 made me curious if it's a card specific issue. So I swa=
pped
some cards around my boxes. I run both machines on Kernel 4.13.5.
on my PowerMac G5 11,2:
Radeon HD 5450: hits the bug
Radeon HD 6570: hits the bug
Radeon X600: WORKS
on Athlon X4 845:
Radeon HD 5450: WORKS
Radeon HD 6570: WORKS
Radeon X600: WORKS
The r380 Radeon X600 passes the ring test whereas the r600 cards fail:
# dmesg | grep -i drm
[ 9.523830] [drm] radeon kernel modesetting enabled.
[ 9.525292] [drm] initializing kernel modesetting (RV380 0x1002:0x5B62
0x1002:0x0F02 0x00).
[ 9.595072] [drm] GPU not posted. posting now...
[ 9.740409] [drm] Generation 2 PCI interface, using max accessible memory
[ 9.740442] [drm] Detected VRAM RAM=3D128M, BAR=3D128M
[ 9.740445] [drm] RAM width 64bits DDR
[ 9.740785] [drm] radeon: 128M of VRAM memory ready
[ 9.740789] [drm] radeon: 512M of GTT memory ready.
[ 9.740810] [drm] GART: num cpu pages 131072, num gpu pages 131072
[ 9.742591] [drm] radeon: 1 quad pipes, 1 Z pipes initialized
[ 9.763583] [drm] PCIE GART of 512M enabled (table at 0x0000000088040000=
).
[ 9.763705] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 9.763708] [drm] Driver supports precise vblank timestamp query.
[ 9.763818] [drm] radeon: irq initialized.
[ 9.763825] [drm] Loading R300 Microcode
[ 10.233486] [drm] radeon: ring at 0x0000000068001000
[ 10.233545] [drm] ring test succeeded in 0 usecs
[ 10.234665] [drm] ib test succeeded in 0 usecs
[ 10.235279] [drm] Radeon Display Connectors
[ 10.235284] [drm] Connector 0:
[ 10.235287] [drm] DVI-I-1
[ 10.235289] [drm] HPD1
[ 10.235293] [drm] DDC: 0x60 0x60 0x60 0x60 0x60 0x60 0x60 0x60
[ 10.235296] [drm] Encoders:
[ 10.235299] [drm] CRT1: INTERNAL_DAC1
[ 10.235302] [drm] DFP1: INTERNAL_TMDS1
[ 10.308511] [drm] fb mappable at 0x880C0000
[ 10.308521] [drm] vram apper at 0x88000000
[ 10.308525] [drm] size 8294400
[ 10.308527] [drm] fb depth is 24
[ 10.308530] [drm] pitch is 7680
[ 10.372575] radeon 0001:06:00.0: fb0: radeondrmfb frame buffer device
[ 10.372649] [drm] Initialized radeon 2.50.0 20080528 for 0001:06:00.0 on
minor 0
So I conclued this issue is produced by some interaction of the r600 DRM wi=
th
PowerPC-specific or Mac-PCIe-specific things?
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