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Bug 1452769 - HPE iLO remote console video goes blank after updating to kernel-rt-3.10.0-514.rt56.210.el6rt
HPE iLO remote console video goes blank after updating to kernel-rt-3.10.0-51...
Status: CLOSED ERRATA
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: realtime-kernel (Show other bugs)
2.5
x86_64 Linux
high Severity high
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Assigned To: Daniel Bristot de Oliveira
Jiri Kastner
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2017-05-19 11:12 EDT by vishal agrawal
Modified: 2017-07-17 08:29 EDT (History)
7 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2017-06-28 12:34:50 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)
Screen shot of the test using kernel 228, it works! (70.61 KB, image/png)
2017-06-26 04:39 EDT, Daniel Bristot de Oliveira
no flags Details


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:1647 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-06-28 16:34:27 EDT

  None (edit)
Comment 11 Daniel Bristot de Oliveira 2017-06-19 16:06:05 EDT
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@redhat.com>
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 04:39 EDT
Created attachment 1291900 [details]
Screen shot of the test using kernel 228, it works!
Comment 17 Jiri Kastner 2017-06-26 04:43:57 EDT
(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 04:52:24 EDT
[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 12:34:50 EDT
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

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