[Bug 73947] New: [DPM] Cape Verde PRO - GPU lockup when dpm is enabled

[Bug 73947] New: [DPM] Cape Verde PRO - GPU lockup when dpm is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=73947

          Priority: medium
            Bug ID: 73947
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [DPM] Cape Verde PRO - GPU lockup when dpm is enabled
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: alexander@tsoy.me
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

Created attachment 92619
  --> https://bugs.freedesktop.org/attachment.cgi?id=92619&action=edit
dmesg.log

Running Unigine Heaven 3.0 causes GPU lockup after 1-2 seconds. This happens
only if dpm is enabled. GPU can be restored to a normal operation only via
system reboot.

My software:

linux-3.12.8 && linux-3.13.0
mesa-10.0.2
llvm-3.4
xf86-video-ati-9999 (latest git)
glamor-9999 (latest git)
libdrm-2.4.50
xorg-server-1.14.3

My hardware:

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Cape Verde PRO [Radeon HD 7750] [1002:683f]

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[Bug 73947] [DPM] Cape Verde PRO - GPU lockup when dpm is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=73947

--- Comment #1 from Alexander Tsoy <alexander@tsoy.me> ---
Created attachment 92620
  --> https://bugs.freedesktop.org/attachment.cgi?id=92620&action=edit
Xorg.0.log

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[Bug 73947] [DPM] Cape Verde PRO - GPU lockup when dpm is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=73947

--- Comment #2 from Alexander Tsoy <alexander@tsoy.me> ---
(In reply to comment #0)
> My software:
> 
> linux-3.12.8 && linux-3.13.0

Same problem with 3.11.9

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[Bug 73947] [DPM] Cape Verde PRO - GPU lockup when dpm is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=73947

--- Comment #3 from Alexander Tsoy <alexander@tsoy.me> ---
Hmm.. I can reproduce lockups when dpm is disabled: using "profile" method just
switch profile from "default" to (for example) "high". So probably any change
of powerstate cause lockups.

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[Bug 73947] [DPM] Cape Verde PRO - GPU lockup when dpm is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=73947

--- Comment #4 from Alexander Tsoy <alexander@tsoy.me> ---
Sorry, my last comment is incorrect. Seems the card just cannot reliably work
in a high power states. When no 3D apps are running, power profiles can be
freely switched. If I first switch profile to "high" and then run Unigine
Heaven (I didn't test other modern 3D apps yet, but probably the result will be
the same), then the GPU lockup.

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[Bug 73947] [DPM] Cape Verde PRO - GPU lockup when dpm is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=73947

--- Comment #5 from Alexander Tsoy <alexander@tsoy.me> ---
Created attachment 92823
  --> https://bugs.freedesktop.org/attachment.cgi?id=92823&action=edit
lspci-vvvnn.log

Looks like a hardware related problem. fglrx is also failing for me. According
to lspci, x16 PCI Express port is capable to provide only 25W, which is not
enough for CAPE VERDE. Also additional x8 PCI-E lines which is shared between
this port and the neighbour x8 port are not active. The motherboard is
Supermicro H8SCM.

LnkCap:    Port #0, Speed 5GT/s, Width x8, ASPM L0s L1, Latency L0 <1us, L1
<8us
    ClockPM- Surprise- LLActRep+ BwNot+
SltCap:    AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
    Slot #7, PowerLimit 25.000W; Interlock- NoCompl+

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[Bug 73947] [DPM] Cape Verde PRO - GPU lockup when dpm is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=73947

Alexander Tsoy <alexander@tsoy.me> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

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