https://bugs.freedesktop.org/show_bug.cgi?id=28386
Summary: [KMS] echo standby > /sys/power/state hang machine forever Product: DRI Version: XOrg CVS Platform: x86 (IA32) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/Radeon AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: randrik@mail.ru
Using mainline kernel up to
commit 03cd3739818d3fa7f973d0fb6d3aa63122ea00a0 Merge: 1067b6c 06b4367 Author: Linus Torvalds torvalds@linux-foundation.org Date: Thu Jun 3 07:20:28 2010 -0700 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
i got hard-freeze right after monitor goes into standby mode (blinking led on monitor itself).
Same kernel goes into standby mode OK with nouveau driver or with modprobe radeon modeset=0.
This was observed right after console login, but starting X before makes no difference.
Videocard:
01:00.0 0300: 1002:5964 (rev 01) (prog-if 00 [VGA controller]) Subsystem: 1787:5964 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 64 (2000ns min), Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 16 Region 0: Memory at d0000000 (32-bit, prefetchable) [size=128M] Region 1: I/O ports at c800 [size=256] Region 2: Memory at dfef0000 (32-bit, non-prefetchable) [size=64K] Expansion ROM at dfec0000 [disabled] [size=128K] Capabilities: [58] AGP version 2.0 Status: RQ=80 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3- Rate=x1,x2,x4 Command: RQ=32 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW- Rate=x4 Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Kernel driver in use: radeon Kernel modules: radeon
a.k.a. Radeon 9200SE
disabling pm_async (echo 0 > /sys/power/pm_async) doesn't help setting pm_test to [devices] freezes like plain "echo standby > /sys/power/state"
I'll attach dmesg from normal boot