[Bug 66940] Mobility Radeon HD 5650 doesn't resume from suspend on kernel 3.11 (linus and drm_next)

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=66940

--- Comment #10 from Bernhard Held <berny156@gmx.de> ---
My mileage varies with 3.11-rc5. In rare case suspend/resume works. Most of the
time suspend shows:

[   34.926841] Freezing user space processes ... (elapsed 0.001 seconds) done.
[   35.075229] Freezing remaining freezable tasks ... (elapsed 0.001 seconds)
done.
[   45.908028] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
[   45.908031] radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000004
last fence id 0x0000000000000002)
[   45.908033] [drm:r600_uvd_ib_test] *ERROR* radeon: fence wait failed (-35).
[   45.908037] [drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB on
ring 5 (-35).

During resume the PC either freezes after "PM: Read xxxxx kbytes in y.yy
seconds" or dmesg shows:

[    4.879714] Freezing user space processes ... (elapsed 0.000 seconds) done.
[    5.190862] PM: Using 3 thread(s) for decompression.
[    5.190862] PM: Loading and decompressing image data (99920 pages)...
[    5.466130] PM: Image loading progress:   0%
[    5.774497] PM: Image loading progress:  10%
[    5.868650] PM: Image loading progress:  20%
[    5.951424] PM: Image loading progress:  30%
[    6.044454] PM: Image loading progress:  40%
[    6.158650] PM: Image loading progress:  50%
[    6.249908] PM: Image loading progress:  60%
[    6.336868] PM: Image loading progress:  70%
[    6.421403] PM: Image loading progress:  80%
[    6.508071] PM: Image loading progress:  90%
[    6.592575] PM: Image loading done.
[    6.596124] PM: Read 399680 kbytes in 1.39 seconds (287.53 MB/s)
[   35.608037] usb usb1: root hub lost power or was reset
[   35.608038] usb usb2: root hub lost power or was reset
[   35.948432] xhci_hcd 0000:03:00.0: xHCI xhci_drop_endpoint called with
disabled ep ffff8801a5f8e880
[   45.992029] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
[   45.992032] radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000004
last fence id 0x0000000000000002)
[   45.992034] [drm:r600_uvd_ib_test] *ERROR* radeon: fence wait failed (-35).
[   45.992037] [drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB on
ring 5 (-35).
[   46.548477] Restarting tasks ... done.

After this I can use the console and KDM is running, but X crashes at logon.

Without CYPRESS_uvd.bin suspend/resume works reliable.
CEDAR_me.bin, CEDAR_pfp.bin, CEDAR_rlc.bin, CEDAR_smc.bin and CYPRESS_uvd.bin
are from git://git.kernel.org/pub/scm/linux/kernel/git/dwmw2/linux-firmware.git

I'm using a 2560x1440 console with Dual-DVI.

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