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 864982 - Alpha transparency doesn't work well with spice-server 0.12 in some circumstances
Summary: Alpha transparency doesn't work well with spice-server 0.12 in some circumsta...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: spice-server
Version: 6.4
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: beta
: ---
Assignee: Yonit Halperin
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On:
Blocks: 895654
TreeView+ depends on / blocked
 
Reported: 2012-10-10 14:47 UTC by David Jaša
Modified: 2013-07-03 12:07 UTC (History)
11 users (show)

Fixed In Version: spice-server-0.12.0-10
Doc Type: Bug Fix
Doc Text:
Cause: In some circumstances (non-RGB images with no pallete and with masks), images were not used. Consequence: Some images were mis-rendered, such as icons with a black background or white rounded corners Fix: Render such images instead of dropping them Result: Rendering looks better.
Clone Of:
Environment:
Last Closed: 2013-02-21 10:03:26 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
fedora white rounded corners (1017.37 KB, image/png)
2012-10-10 14:47 UTC, David Jaša 		no flags Details
winxp icon background (483.71 KB, image/png)
2012-10-10 14:49 UTC, David Jaša 		no flags Details
winxp icon background (481.95 KB, image/png)
2012-10-10 14:51 UTC, David Jaša 		no flags Details
fix for the windows guest issue (7.50 KB, patch)
2012-12-12 13:29 UTC, Yonit Halperin 		no flags Details | Diff
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2013:0529 0 normal SHIPPED_LIVE spice-server bug fix and enhancement update 2013-02-20 21:51:04 UTC

Description David Jaša 2012-10-10 14:47:53 UTC 
Created attachment 624941 [details]
fedora white rounded corners

Description of problem:
Alpha transparency doesn't work well with spice-server 0.12 in some circumstances

Version-Release number of selected component (if applicable):
qemu-kvm-0.12.1.2-2.320.el6.x86_64
spice-server-0.12.0-1.el6.x86_64
in the VM, current driver has to be used, too (qxl-win 0.1-15, xorg-x11-drv-qxl >= 0.1.0)
client version doesn't matter (you can see the same when using spicec, too)

How reproducible:
100 %

Steps to Reproduce:
1. in windows xp guest, open compmgmt.msc console
2. in fedora 18 guest, open Display properties
3.
  
Actual results:
1. toolbar icons in the console have black background
2. rounded corners of display label are rended white (see the screenshot)

Expected results:
everything is rendered normally 

Additional info:
Comment 1 David Jaša 2012-10-10 14:49:08 UTC 
Created attachment 624942 [details]
winxp icon background

note also the white background of "ca.crt" desktop icon
Comment 2 David Jaša 2012-10-10 14:51:36 UTC 
Created attachment 624943 [details]
winxp icon background

note that when selected, the tranparency of "ca.crt" icon works just fine

I forgot to write to the description this: the issue is not present in spice-server 0.10
Comment 3 David Jaša 2012-12-12 09:50:55 UTC 
The bug only shows up for "-M rhel6.3.0" or lower, when using "-M rhel6.4.0", it isn't there. Could this suggest bug in qxl device? BTW bug 886125 reproducibility also depends on qemu machine type.

Host software versions:
spice-server-0.12.0-8.el6.x86_64
qemu-kvm-0.12.1.2-2.340.el6.x86_64
seabios-0.6.1.2-25.el6.x86_64
vgabios-0.6b-3.7.el6.noarch
Comment 4 David Jaša 2012-12-12 09:51:58 UTC 
in F18, the bug is gone now.
Comment 5 Gerd Hoffmann 2012-12-12 10:03:55 UTC 
(In reply to comment #3)
> The bug only shows up for "-M rhel6.3.0" or lower, when using "-M
> rhel6.4.0", it isn't there. Could this suggest bug in qxl device? BTW bug
> 886125 reproducibility also depends on qemu machine type.

Could also be a guest driver bug.  rhel 6.4 adds new spice capabilities which indeed affect transparency rendering.  Those are turned off for compatibility reasons when running with the 6.3 machine type.  So it could be the new guest drivers have trouble handling the old qxl device correctly.

The fact that with F18 the bug disappeared (did you update the guest driver?) suggests that it actually is a guest bug.

Do the guests with the new qxl driver show idendical behavior RHEL-6.3 and on RHEL-6.4 when starting qemu with -M rhel6.3.0 ?
Comment 6 Yonit Halperin 2012-12-12 13:29:41 UTC 
Created attachment 662350 [details]
fix for the windows guest issue

I think that the Linux guest issue results from a different bug than the Windows guest one.
A patch for fixing the Windows guest related bug has been posted (attached).
David, can you open an additional bug for distinguishing the 2 cases?
Comment 7 David Jaša 2012-12-12 13:48:15 UTC 
(In reply to comment #5)
...
> Could also be a guest driver bug.  rhel 6.4 adds new spice capabilities
> which indeed affect transparency rendering.  Those are turned off for
> compatibility reasons when running with the 6.3 machine type.  So it could
> be the new guest drivers have trouble handling the old qxl device correctly.
> 
> The fact that with F18 the bug disappeared (did you update the guest
> driver?) suggests that it actually is a guest bug.
> 

I didn't update the guest driver (there was no update since 0.1 after all) but there were quite some builds of qemu and spice-server in last two months.

> Do the guests with the new qxl driver show idendical behavior RHEL-6.3 and
> on RHEL-6.4 when starting qemu with -M rhel6.3.0 ?

I couldn't try that because when I'm working with more VM's, I'm experiencing total host freeze... :(


(In reply to comment #6)
...
> David, can you open an additional bug for distinguishing the 2 cases?

I will if I see the bug in Fedora again.
Comment 12 errata-xmlrpc 2013-02-21 10:03:26 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.

http://rhn.redhat.com/errata/RHBA-2013-0529.html
Note You need to log in before you can comment on or make changes to this bug.