RHBA-2010:0259 - Bug Fix Advisory

Topic

Updated xorg-x11-server packages that fix various bugs are now
available.

Description

X.Org X11 is an open source implementation of the X Window System. It
provides the basic low level functionality upon which graphical user
interfaces such as GNOME and KDE are designed.

These updated packages address the following bugs:

• resizing a glxgears window horizontally across the screen caused X to

segfault. Changes were made in the related mesa packages and resizing no
longer causes the error. (BZ#435963)

Note: due to the unusual build process for this package, the code fix is
applied to the mesa packages, but the resulting compiled code is in the
xorg-x11-server package (see BZ#536868 for the bug as raised against mesa).

• the X server ceased support for Pluggable Authentication Modules

(PAM). Support for PAM was added back to the package and PAM can now be
used as expected. (BZ#486120)

• a patch had been added to the xorg-x11-server package which was going to

cause compatibility issues between the xorg-x11-server package and proposed
NVIDIA drivers. The randr-disabled-fb.patch was removed and the package
should now work as expected. (BZ#496108)

• the MGA and Xserver drivers were defaulting to inappropriate resolutions,

causing the screen to go black, or be otherwise unreadable. The default
values were changed, and resolution is now set to more reasonable values.
(BZ#507536 and BZ#497853)

• when using multiple outputs on some ATI hardware, the GNOME screensaver

and some related functions were not operating correctly. Changes were made
to the xorg-x11-server package to better support the gnome-screensaver and
xinerama functions and the screensaver now works correctly. (BZ#516204,
BZ#530309 and BZ#554571)

• changing to a higher resolution on Radeon 3100 hardware caused unexpected

results on the desktop image. The X server resizing code was fixed to also
resize the screen pixmap, and changing resolutions now works as expected.
(BZ#515609)

• the Anaconda graphical installer failed to start at the default 800x600

resolution on systems utilizing Intel Graphics Device Next Generation
(IGDNG) devices. Support for this device has now been added, and Anaconda
now starts correctly. (BZ#510120)

• the X server did not automatically detect the QXL virtual graphics

device, causing unexpected behavior with mouse detection and movement. The
QXL driver is now loaded correctly and the mouse problems no longer
manifest. (BZ#558611)

Users are advised to upgrade to these updated xorg-x11-server packages,
which resolve these issues.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 486120 - xorg-x11-server: Xorg server built without PAM support
• BZ - 497853 - RHEL 5.3: mga driver uses weird 1280x768 default mode
• BZ - 507536 - Xserver selects the largest mode available and not the most suitable
• BZ - 515609 - xrandr corruption on Radeon 3100
• BZ - 516204 - Screensaver and lock screen broken with external monitor
• BZ - 530309 - xrandr 1.2 is causing overlapping xinerama geometry by default which messes up gnome-screensaver
• BZ - 554571 - t400 multi screen handling issue
• BZ - 558611 - Need to autodetect the qxl driver

CVEs

(none)

References

(none)