RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1484125 - 0001-composite-Implement-backing-store-Always.patch breaks X Server Video ABI
Summary: 0001-composite-Implement-backing-store-Always.patch breaks X Server Video ABI
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: xorg-x11-server
Version: 6.9
Hardware: Unspecified
OS: Unspecified
urgent
urgent
Target Milestone: rc
: ---
Assignee: Adam Jackson
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On:
Blocks: 1425546 1489947 1512804 1561622
TreeView+ depends on / blocked
 
Reported: 2017-08-22 18:23 UTC by Daniel Dadap
Modified: 2018-06-19 05:20 UTC (History)
8 users (show)

Fixed In Version: xorg-x11-server-1.17.4-17.el6
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
: 1512804 (view as bug list)
Environment:
Last Closed: 2018-06-19 05:19:38 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2018:1899 0 None None None 2018-06-19 05:20:14 UTC

Description Daniel Dadap 2017-08-22 18:23:32 UTC 
Description of problem:

The patch 0001-composite-Implement-backing-store-Always.patch which is applied to the xorg-x11-server package in RHEL 6.8 and RHEL 6.9 breaks the video driver ABI.

Version-Release number of selected component (if applicable):

RHEL 6.8: 1.17.4-9.el6
RHEL 6.9: 1.17.4-16.el6

How reproducible:

Use a proprietary X driver (e.g. NVIDIA) on an affected server. There will be subtle bugs, e.g.:

* With workstation overlays enabled, GTK+ dropdown menus (e.g. in the nvidia-settings control panel) will be displayed at the wrong coordinates after a resolution change.
* Quad-buffered stereo flipping doesn't work correctly in a stereo-aware compositing window manager.

Additional info:

This is probably avoidable without a full revert of the relevant patch by adding the new field to the end of the WindowRec struct, though this hasn't been explicitly tested, yet.
Comment 2 Adam Jackson 2017-09-08 18:26:07 UTC 
That certainly does need fixin'.
Comment 3 James Jones 2017-09-26 19:05:55 UTC 
Just a quick update: We verified that adding the new bit to the end of the WindowRec rather than in the middle fixes the issue, as expected.  Initial testing of that alternate patch doesn't reveal any further issues caused by such a change.
Comment 6 Joseph Kachuck 2017-11-14 14:42:05 UTC 
Hello,
This bug has been copied as 6.9 z-stream (EUS) bug #1512804

Thank You
Joe Kachuck
Comment 8 Joseph Kachuck 2017-12-06 18:20:26 UTC 
Hello Nvidia,
This issue should be corrected in the following test packages:
http://people.redhat.com/jkachuck/.1484125/

Please let me know if you would be able to test this package to confirm it corrects this issue for you.

Please note this download may be removed in 3 days.

Thank You
Joe Kachuck
Comment 9 Tomas Pelka 2017-12-13 07:50:18 UTC 
(In reply to Joseph Kachuck from comment #8)
> Hello Nvidia,
> This issue should be corrected in the following test packages:
> http://people.redhat.com/jkachuck/.1484125/
> 
> Please let me know if you would be able to test this package to confirm it
> corrects this issue for you.
> 
> Please note this download may be removed in 3 days.
> 
> Thank You
> Joe Kachuck

Hello Nvidia any feedback?

Thanks
-Tom
Comment 12 Aaron Plattner 2018-01-08 20:06:14 UTC 
Sorry for the extreme delay. Our QA folks tested the el6_9.1 packages from your link and confirmed that the bug is fixed.
Comment 13 Tomas Pelka 2018-01-08 21:05:14 UTC 
Thank you Aaron!
Comment 16 errata-xmlrpc 2018-06-19 05:19:38 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/RHBA-2018:1899
Note You need to log in before you can comment on or make changes to this bug.