[Bug 71891] 3.13 fails to boot with the radeon module

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=71891

--- Comment #15 from sdh <sh.siddhartha@gmail.com> ---
Thanks, that helped :)

Doing a 'modprobe radeon' after booting up gives the following errors:
radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000002 last fence id
0x0000000000000000 on ring 5)
[drm:uvd_v1_0_ib_test] *ERROR* radeon: fence wait failed (-35).
[drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB on ring 5 (-35).

Doing a startx completely hangs up the system

Full log:
# journalctl --since="2014-04-12" -o cat | grep 'drm\|radeon'
[drm] Initialized drm 1.1.0 20060810
[drm] radeon kernel modesetting enabled.
fb: conflicting fb hw usage radeondrmfb vs VESA VGA - removing generic driver
[drm] initializing kernel modesetting (RV730 0x1002:0x9480 0x1028:0x0447).
[drm] register mmio base: 0xFBE20000
[drm] register mmio size: 65536
radeon 0000:01:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M
used)
radeon 0000:01:00.0: GTT: 1024M 0x0000000040000000 - 0x000000007FFFFFFF
[drm] Detected VRAM RAM=1024M, BAR=256M
[drm] RAM width 128bits DDR
[drm] radeon: 1024M of VRAM memory ready
[drm] radeon: 1024M of GTT memory ready.
[drm] Loading RV730 Microcode
[drm] Internal thermal controller with fan control
[drm] radeon: dpm initialized
[drm] GART: num cpu pages 262144, num gpu pages 262144
[drm] PCIE GART of 1024M enabled (table at 0x000000000025D000).
radeon 0000:01:00.0: WB enabled
radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and
cpu addr 0xffff8800b665cc00
radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and
cpu addr 0xffff8800b665cc0c
radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x000000000005c598 and
cpu addr 0xffffc90012f1c598
[drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[drm] Driver supports precise vblank timestamp query.
radeon 0000:01:00.0: irq 50 for MSI/MSI-X
radeon 0000:01:00.0: radeon: using MSI.
[drm] radeon: irq initialized.
[drm] ring test on 0 succeeded in 1 usecs
[drm] ring test on 3 succeeded in 1 usecs
[drm] ring test on 5 succeeded in 1 usecs
[drm] UVD initialized successfully.
[drm] ib test on ring 0 succeeded in 0 usecs
[drm] ib test on ring 3 succeeded in 0 usecs
radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000002 last fence id
0x0000000000000000 on ring 5)
[drm:uvd_v1_0_ib_test] *ERROR* radeon: fence wait failed (-35).
[drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB on ring 5 (-35).
Starting Load/Save Screen Backlight Brightness of backlight:radeon_bl0...
Started Load/Save Screen Backlight Brightness of backlight:radeon_bl0.
[drm] radeon atom DIG backlight initialized
[drm] Radeon Display Connectors
[drm] Connector 0:
[drm]   VGA-1
[drm]   DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c
[drm]   Encoders:
[drm]     CRT1: INTERNAL_KLDSCP_DAC1
[drm] Connector 1:
[drm]   HDMI-A-1
[drm]   HPD1
[drm]   DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c 0x7e5c
[drm]   Encoders:
[drm]     DFP1: INTERNAL_UNIPHY
[drm] Connector 2:
[drm]   LVDS-1
[drm]   DDC: 0x7f68 0x7f68 0x7f6c 0x7f6c 0x7f70 0x7f70 0x7f74 0x7f74
[drm]   Encoders:
[drm]     LCD1: INTERNAL_UNIPHY2
[drm] fb mappable at 0xC0460000
[drm] vram apper at 0xC0000000
[drm] size 4325376
[drm] fb depth is 24
[drm]    pitch is 5632
fbcon: radeondrmfb (fb0) is primary device
radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device
radeon 0000:01:00.0: registered panic notifier
[drm] Initialized radeon 2.37.0 20080528 for 0000:01:00.0 on minor 0
radeon 0000:01:00.0: GPU reset succeeded, trying to resume
[drm:rv770_dpm_set_power_state] *ERROR* rv770_set_sw_state failed
[drm] PCIE GART of 1024M enabled (table at 0x000000000025D000).
radeon 0000:01:00.0: WB enabled
radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and
cpu addr 0xffff8800b665cc00
radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and
cpu addr 0xffff8800b665cc0c
radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x000000000005c598 and
cpu addr 0xffffc90012f1c598

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