Bug 82655

Summary:	[ivb] constant freezes - [drm:intel_dp_start_link_train] ERROR too many voltage retries, give up
Product:	DRI	Reporter:	Martin Andersen <martin.x.andersen>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	CLOSED FIXED	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	normal
Priority:	medium	CC:	intel-gfx-bugs
Version:	XOrg git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Martin Andersen 2014-08-15 09:08:14 UTC

Experiencing this on numerous kernels, up to and including 3.16.0. It is making the system unusable. The primary display is hooked up via DisplayPort.

Aug 14 09:06:10 tamarix kernel: [85208.516247] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
Aug 14 09:06:10 tamarix kernel: [85208.520082] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
Aug 14 09:06:10 tamarix kernel: [85208.523917] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
Aug 14 16:01:53 tamarix kernel: [110163.306929] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
Aug 14 16:01:53 tamarix kernel: [110163.312644] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
Aug 14 16:01:53 tamarix kernel: [110163.318410] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
Aug 15 09:57:49 tamarix kernel: [174748.187437] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
Aug 15 09:57:49 tamarix kernel: [174748.193163] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
Aug 15 11:00:12 tamarix kernel: [178493.607883] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
Aug 15 11:00:12 tamarix kernel: [178493.613546] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up

Sometimes one is able to get the desktop back by sending a hangup signal to the WM, often times not.

Comment 1 painkiller 2014-09-04 09:08:45 UTC

I run fedora 20 in Asus UX31A and I cannot recover from login window because this error. There are some fix for this, patch or somthing like that?

Comment 2 Jani Nikula 2014-09-10 15:48:56 UTC

(In reply to comment #1)
> I run fedora 20 in Asus UX31A and I cannot recover from login window because
> this error. There are some fix for this, patch or somthing like that?

I presume the original report is about external display port, and your problem is with the laptop panel. Let's keep this one about the external display port.

Comment 3 Jani Nikula 2014-09-10 15:49:57 UTC

Martin, please attach full dmesg with drm.debug=0xe module parameter all the way from boot to the problem, running a recent kernel.

Comment 4 Martin Andersen 2014-09-11 08:58:12 UTC

Currently running 3.17.0-994-lowlatency #201409042205 – although this issue has not popped up with this kernel build (yet). Either a previous commit fixed it, or the failure condition hasn't occurred for some reason.

I'll update once I have more info.

Comment 5 Jesse Barnes 2014-12-05 20:16:41 UTC

Hoping this is fixed!  Martin, please re-open if not.

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