[Bug 73338] Fan speed in idle at 40% with radeonsi and at 18% with catalyst

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73338

--- Comment #88 from Oliver Winker <oliverml1 at oli1170.net> ---
(In reply to r.andersen from comment #84)
> ... and I should add
> 
> echo "50" > pwm1
> 
> also makes my computer hang.

Exactly the same on my HD7850 (see [1]) on kernel v4.0. 

Are there maybe hints how to debug this ?

[1]
---
Linux gamix64 4.0.0-owi1+ #1 SMP Sat May 9 10:17:17 CEST 2015 x86_64 GNU/Linux
---
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Pitcairn PRO [Radeon HD 7850] (prog-if 00 [VGA controller])
        Subsystem: PC Partner Limited / Sapphire Technology Radeon HD 7850 2GB
GDDR5 DVI-I/DVI-D/HDMI/DP
        Flags: bus master, fast devsel, latency 0, IRQ 36
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Memory at f5000000 (64-bit, non-prefetchable) [size=256K]
        I/O ports at a000 [size=256]
        [virtual] Expansion ROM at f4000000 [disabled] [size=128K]
        Capabilities: [48] Vendor Specific Information: Len=08 <?>
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010
<?>
        Capabilities: [150] Advanced Error Reporting
        Capabilities: [270] #19
        Capabilities: [2b0] Address Translation Service (ATS)
        Capabilities: [2c0] #13
        Capabilities: [2d0] #1b
        Kernel driver in use: radeon
---

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