On 02/24/2016 10:53 PM, Jindal, Sonika wrote:If this is with single link cable, the issue could be the same.
Hi Joe,We testing with 300 retries, but the second monitor still did not show
Yes, first thing to try is to increase the tries.
up. However, it did show up in lspci.
Can you please point me to the bug and provide more details like platform, monitor, cable.The bug is at: http://pad.lv/1543683 . All the hardware details should
be in the bug report. The cable is a single link dvi-d cable.
Unfortunately the bug reporter does not have a dual link cable to test.
If you need any additional info, we can ask the bug reporter.
Are you referring to the same issue as Oleksandr reported where a single link dvi/hdmi cable didnât work and dual link worked?I'm not sure if this is the exact issue or not. I'll review the other
thread and compare.
From: Joseph Salisbury [mailto:joseph.salisbury@xxxxxxxxxxxxx]
Sent: Thursday, February 25, 2016 3:09 AM
To: Jindal, Sonika <sonika.jindal@xxxxxxxxx>
Cc: Sharma, Shashank <shashank.sharma@xxxxxxxxx>; Vivi, Rodrigo <rodrigo.vivi@xxxxxxxxx>; Daniel Vetter <daniel.vetter@xxxxxxxx>; Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>; David Airlie <airlied@xxxxxxxx>; intel-gfx <intel-gfx@xxxxxxxxxxxxxxxxxxxxx>; dri-devel <dri-devel@xxxxxxxxxxxxxxxxxxxxx>; LKML <linux-kernel@xxxxxxxxxxxxxxx>
Subject: [4.4-rc1][Regression] drm/i915: Check live status before reading edid
A kernel bug report was opened against Ubuntu . After a kernel bisect, it was found that reverting the following commit resolved this bug:
Author: Sonika Jindal <sonika.jindal@xxxxxxxxx>
Date: Tue Sep 15 09:44:20 2015 +0530
drm/i915: Check live status before reading edid
The regression was introduced as of v4.4-rc1.
I was hoping to get your feedback, since you are the patch author. Do think increasing the number of tries in intel_hdmi_detect() is worth trying? Do you think gathering any additional data will help diagnose this issue, or would it be best to submit a revert request?