[Bug 66551] New: System hang when DPM enabled on rs780.

https://bugs.freedesktop.org/show_bug.cgi?id=66551

Priority: medium Bug ID: 66551 Assignee: dri-devel@lists.freedesktop.org Summary: System hang when DPM enabled on rs780. Severity: normal Classification: Unclassified OS: All Reporter: octoploid@yandex.com Hardware: Other Status: NEW Version: XOrg CVS Component: DRM/Radeon Product: DRI

I've tested the new DPM code (git://people.freedesktop.org/~agd5f/linux drm-next-3.11) on my rs780. I can reproducible hang my system by just copy/pasting a big document under LibreOffice. During the hang the keyboard is unusable and the mouse pointer only moves noncontinuous and jerky. Hitting the reset button is the only remedy.

By disabling DPM the problem goes away.

Jul 3 15:31:22 x4 kernel: [drm] Initialized drm 1.1.0 20060810 Jul 3 15:31:22 x4 kernel: [drm] radeon kernel modesetting enabled. Jul 3 15:31:22 x4 kernel: [drm] initializing kernel modesetting (RS780 0x1002:0x9614 0x1043:0x834D). Jul 3 15:31:22 x4 kernel: [drm] register mmio base: 0xFBEE0000 Jul 3 15:31:22 x4 kernel: [drm] register mmio size: 65536 Jul 3 15:31:22 x4 kernel: ATOM BIOS: 113 Jul 3 15:31:22 x4 kernel: radeon 0000:01:05.0: VRAM: 128M 0x00000000C0000000 - 0x00000000C7FFFFFF (128M used) Jul 3 15:31:22 x4 kernel: radeon 0000:01:05.0: GTT: 512M 0x00000000A0000000 - 0x00000000BFFFFFFF Jul 3 15:31:22 x4 kernel: [drm] Detected VRAM RAM=128M, BAR=128M Jul 3 15:31:22 x4 kernel: [drm] RAM width 32bits DDR Jul 3 15:31:22 x4 kernel: [TTM] Zone kernel: Available graphics memory: 4082344 kiB Jul 3 15:31:22 x4 kernel: [TTM] Zone dma32: Available graphics memory: 2097152 kiB Jul 3 15:31:22 x4 kernel: [TTM] Initializing pool allocator Jul 3 15:31:22 x4 kernel: [TTM] Initializing DMA pool allocator Jul 3 15:31:22 x4 kernel: [drm] radeon: 128M of VRAM memory ready Jul 3 15:31:22 x4 kernel: [drm] radeon: 512M of GTT memory ready. Jul 3 15:31:22 x4 kernel: [drm] GART: num cpu pages 131072, num gpu pages 131072 Jul 3 15:31:22 x4 kernel: [drm] Loading RS780 Microcode Jul 3 15:31:22 x4 kernel: [drm] PCIE GART of 512M enabled (table at 0x00000000C0040000). Jul 3 15:31:22 x4 kernel: radeon 0000:01:05.0: WB enabled Jul 3 15:31:22 x4 kernel: radeon 0000:01:05.0: fence driver on ring 0 use gpu addr 0x00000000a0000c00 and cpu addr 0xffff880215c05c00 Jul 3 15:31:22 x4 kernel: radeon 0000:01:05.0: fence driver on ring 3 use gpu addr 0x00000000a0000c0c and cpu addr 0xffff880215c05c0c Jul 3 15:31:22 x4 kernel: [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). Jul 3 15:31:22 x4 kernel: [drm] Driver supports precise vblank timestamp query. Jul 3 15:31:22 x4 kernel: [drm] radeon: irq initialized. Jul 3 15:31:22 x4 kernel: radeon 0000:01:05.0: setting latency timer to 64 Jul 3 15:31:22 x4 kernel: [drm] ring test on 0 succeeded in 1 usecs Jul 3 15:31:22 x4 kernel: [drm] ring test on 3 succeeded in 1 usecs Jul 3 15:31:22 x4 kernel: [drm] ib test on ring 0 succeeded in 0 usecs Jul 3 15:31:22 x4 kernel: [drm] ib test on ring 3 succeeded in 0 usecs Jul 3 15:31:22 x4 kernel: [drm] Radeon Display Connectors Jul 3 15:31:22 x4 kernel: [drm] Connector 0: Jul 3 15:31:22 x4 kernel: [drm] VGA-1 Jul 3 15:31:22 x4 kernel: [drm] DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c Jul 3 15:31:22 x4 kernel: [drm] Encoders: Jul 3 15:31:22 x4 kernel: [drm] CRT1: INTERNAL_KLDSCP_DAC1 Jul 3 15:31:22 x4 kernel: [drm] Connector 1: Jul 3 15:31:22 x4 kernel: [drm] DVI-D-1 Jul 3 15:31:22 x4 kernel: [drm] HPD3 Jul 3 15:31:22 x4 kernel: [drm] DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c 0x7e5c Jul 3 15:31:22 x4 kernel: [drm] Encoders: Jul 3 15:31:22 x4 kernel: [drm] DFP3: INTERNAL_KLDSCP_LVTMA Jul 3 15:31:22 x4 kernel: == power state 0 == Jul 3 15:31:22 x4 kernel: ui class: none Jul 3 15:31:22 x4 kernel: internal class: boot Jul 3 15:31:22 x4 kernel: caps: video Jul 3 15:31:22 x4 kernel: uvd vclk: 0 dclk: 0 Jul 3 15:31:22 x4 kernel: power level 0 sclk: 50000 vddc_index: 2 Jul 3 15:31:22 x4 kernel: power level 1 sclk: 50000 vddc_index: 2 Jul 3 15:31:22 x4 kernel: status: c r b Jul 3 15:31:22 x4 kernel: == power state 1 == Jul 3 15:31:22 x4 kernel: ui class: performance Jul 3 15:31:22 x4 kernel: internal class: none Jul 3 15:31:22 x4 kernel: caps: video Jul 3 15:31:22 x4 kernel: uvd vclk: 0 dclk: 0 Jul 3 15:31:22 x4 kernel: power level 0 sclk: 50000 vddc_index: 1 Jul 3 15:31:22 x4 kernel: power level 1 sclk: 70000 vddc_index: 2 Jul 3 15:31:22 x4 kernel: status: Jul 3 15:31:22 x4 kernel: == power state 2 == Jul 3 15:31:22 x4 kernel: ui class: none Jul 3 15:31:22 x4 kernel: internal class: uvd Jul 3 15:31:22 x4 kernel: caps: video Jul 3 15:31:22 x4 kernel: uvd vclk: 53300 dclk: 40000 Jul 3 15:31:22 x4 kernel: power level 0 sclk: 50000 vddc_index: 1 Jul 3 15:31:22 x4 kernel: power level 1 sclk: 50000 vddc_index: 1 Jul 3 15:31:22 x4 kernel: status: Jul 3 15:31:22 x4 kernel: switching from power state: Jul 3 15:31:22 x4 kernel: ui class: none Jul 3 15:31:22 x4 kernel: internal class: boot Jul 3 15:31:22 x4 kernel: caps: video Jul 3 15:31:22 x4 kernel: uvd vclk: 0 dclk: 0 Jul 3 15:31:22 x4 kernel: power level 0 sclk: 50000 vddc_index: 2 Jul 3 15:31:22 x4 kernel: power level 1 sclk: 50000 vddc_index: 2 Jul 3 15:31:22 x4 kernel: status: c b Jul 3 15:31:22 x4 kernel: switching to power state: Jul 3 15:31:22 x4 kernel: ui class: performance Jul 3 15:31:22 x4 kernel: internal class: none Jul 3 15:31:22 x4 kernel: caps: video Jul 3 15:31:22 x4 kernel: uvd vclk: 0 dclk: 0 Jul 3 15:31:22 x4 kernel: power level 0 sclk: 50000 vddc_index: 1 Jul 3 15:31:22 x4 kernel: power level 1 sclk: 70000 vddc_index: 2 Jul 3 15:31:22 x4 kernel: status: r Jul 3 15:31:22 x4 kernel: [drm] radeon: dpm initialized