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New: "intel_pstate: Set turbo VID for BayTrail" causes stall on Intel NUC DN2820FYKH

Bug 77951 [email protected] 1 participant 3 messages Jun 15, 2014 – Jun 16, 2014

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https://bugzilla.kernel.org/show_bug.cgi?id=77951

Bug ID: 77951
Summary: "intel_pstate: Set turbo VID for BayTrail" causes
stall on Intel NUC DN2820FYKH
Product: Power Management
Version: 2.5
Kernel Version: 3.15
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: cpufreq
Assignee: [email protected]
Reporter: [email protected]
Regression: No

The hardware:
DN2820FYKH (BIOS version:0028)

The symptom:
The kernel stalls at "Loading, please wait" or sometimes at the the next line where udevd is launched.

I did a bisect which identified the commit 21855ff5bcbdd075e1c99772827a84912ab083dd "intel_pstate: Set turbo VID for BayTrail" as the cause.

I also confirmed it by reverting the commit on v3.15 which fixed the stall.

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[Bug 77951] "intel_pstate: Set turbo VID for BayTrail" causes stall on Intel NUC DN2820FYKH

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=77951

Lan Tianyu <[email protected]> changed:

What |Removed |Added
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             Status|NEW                         |ASSIGNED
                 CC|                            |[email protected]
           Assignee|[email protected]     |[email protected]
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