From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 28386] New: [KMS] echo standby > /sys/power/state hang machine
	forever
Date: Fri,  4 Jun 2010 07:24:40 -0700 (PDT)
Message-ID: <bug-28386-502@http.bugs.freedesktop.org/>
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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

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