Bug 1452769

Summary: HPE iLO remote console video goes blank after updating to kernel-rt-3.10.0-514.rt56.210.el6rt
Product: Red Hat Enterprise MRG Reporter: Vishal Agrawal <vagrawal>
Component: realtime-kernelAssignee: Daniel Bristot de Oliveira <daolivei>
Status: CLOSED ERRATA QA Contact: Jiri Kastner <jkastner>
Severity: high Docs Contact:
Priority: high    
Version: 2.5CC: ableisch, bhu, bugzilla-redhat, daolivei, lgoncalv, vagrawal, williams
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2017-06-28 16:34:50 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
Screen shot of the test using kernel 228, it works! none

Comment 11 Daniel Bristot de Oliveira 2017-06-19 20:06:05 UTC
Hi,

I was able to fix the problem in the local reproducer.

The problem was fixed by changing the following kernel config:

-# CONFIG_DRM_FBDEV_EMULATION is not set
+CONFIG_DRM_FBDEV_EMULATION=y

This option was not present in the older kernels because it show up in the commit:

commit e8154c8f3022b417c7bdb52f31fdb1a0fc525cf6
Author: Rob Clark <rclark>
Date:   Tue May 17 15:59:52 2016 -0400

    [drm] upstream sync to v4.5

Which appeared in the:

git describe e8154c8f3022b417c7bdb52f31fdb1a0fc525cf6
kernel-3.10.0-379.el7-5158-ge8154c8

That was after the 7.2 release.

I build a test kernel based on the latest z-stream kernel, they are here:

http://file.rdu.redhat.com/~daolivei/BZ1452769/

Vishal, could you please deliver this test kernel to the customer to confirm that it fixes the problem?

-- Daniel

Comment 16 Daniel Bristot de Oliveira 2017-06-26 08:39:51 UTC
Created attachment 1291900 [details]
Screen shot of the test using kernel 228, it works!

Comment 17 Jiri Kastner 2017-06-26 08:43:57 UTC
(In reply to Daniel Bristot de Oliveira from comment #16)
> Created attachment 1291900 [details]
> Screen shot of the test using kernel 228, it works!

closing as resolved

Comment 18 Jiri Kastner 2017-06-26 08:52:24 UTC
[indy@dhcp-2-106 tmp]$ grep CONFIG_DRM_FBDEV_EMULATION config-3.10.0-514.rt56.228.el6rt.x86_64 
CONFIG_DRM_FBDEV_EMULATION=y
[indy@dhcp-2-106 tmp]$

Comment 20 errata-xmlrpc 2017-06-28 16:34:50 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2017:1647