Bug 352130

Summary:	x11-drivers/xf86-video-intel-2.14.0 screen curruption when not using SHM extension
Product:	Gentoo Linux	Reporter:	Albert W. Hopkins <marduk>
Component:	New packages	Assignee:	Gentoo X packagers <x11>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	mgariepy
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	screenshot when connected to an xfce-4.8 session via XDMCP local (:0) display with xf86-video-intel-2.14.0 driver

Description Albert W. Hopkins 2011-01-19 15:08:21 UTC

I have an issue with icons with transparent backgrounds. The backgrounds show black instead of transparent "see attachment". This seems to happen when connecting to remote hosts (via XDMCP).  The transparency looks fine however when the client is local to the server and even (I think) when the client is accessed through ssh X11 forwarding.

I did a little bit of deduction and discovered that the issue is not present if i downgrade to xf86-video-intel-2.13.0.

So far I've tried this when the remote machine is Gentoo (xfce) and Ubuntu (gnome).

Comment 1 Albert W. Hopkins 2011-01-19 15:09:59 UTC

Created attachment 260261 [details]
screenshot when connected to an xfce-4.8 session via XDMCP

Notice though in the screenshot that the firefox icons look fine.. weird.

Comment 2 Rémi Cardona (RETIRED) gentoo-dev

2011-01-22 08:39:19 UTC

In theory, you should be able to reproduce the issue locally if you connect to your X server via a tcp/unix-socket only connection and/or disable SHM. Add the following to your xorg.conf if you want to try disabling SHM.

Section "Extensions"
    Option "MIT-SHM" "Disable"
EndSection

Thanks

Comment 3 Albert W. Hopkins 2011-01-22 18:23:00 UTC

Yes, I was able to reproduce locally with SHM disabled.  Screenshot to be attached.

Comment 4 Albert W. Hopkins 2011-01-22 18:28:20 UTC

Created attachment 260512 [details]
local (:0) display with xf86-video-intel-2.14.0 driver

Comment 5 Marc Gariépy 2011-05-25 05:55:51 UTC

I have the same issue using LTSP on ubuntu natty.

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/785280

Comment 6 Albert W. Hopkins 2012-04-26 13:05:47 UTC

I'm closing this out.  It appears fixed (running xf86-video-intel-2.18.0 now).