View source for Problems with fglrx

== Known Troubles and Solutions ==
=== No hardware acceleration ===
If the ATI driver works only without the hardware acceleration, take into consideration that {{path|fglrx_dri.so}} was linked against libstdc++.so.5 which may not be present if your system uses gcc-3.4.

To fix this, compile gcc-3.3.5 and copy <tt>libstdc++.so.5*</tt> to {{path|/usr/lib}} and update the dynamic linker cache via {{cmdroot|ldconfig}}.

=== Troubles using software suspend ===
When the computer resumes from suspend, X only displays a garbled image and the computer is frozen.
The problem is acknowledged in ATI's release notes and in knowledge base entry [https://support.ati.com/ics/support/KBResult.asp?searchFor=Search+Words&search.x=0&search.y=0&searchOption=id&questionID=737-218+&task=knowledge&searchTime=-1&productID=&folderID=-1&resultLimit=50 737-218].

Using [http://www.srcf.ucam.org/~mjg59/vbetool/ vbetool] to save/restore the video card state before/after suspend solved this for some people. If you use swsusp2 scripts you just have to uncomment <tt>EnableVbetool yes</tt> in {{path|/etc/hibernate/hibernate.conf}}.

{| cellspacing="0" cellpadding="2" border="1"
|+ tested with the following configurations
!model!!distro||kernel!!fglrx!!PM!!success!!comments
|-
|{{T42}}||SUSE 9.3||2.6.11||8.14.13||swsusp||yes||
|-
|{{T42p}}||Debian||2.6.10||Debian packaged||swsusp2||yes||
|-
|{{T43}}||???||2.6.12-rc6||8.14.13||swsusp2||no||works if fglrx kernel driver not loaded
|}

=== Troubles with large RAM ===
Version 8.14.13 (and probably earlier versions) of the driver does not seem to be able to cope with large amounts of RAM: with 512 MB it works, with 1.5 GB it crashes the machine as soon as X is started. The problem is present only if the <tt>fglrx</tt> kernel module is loaded, but independently of whether {{kernelconf|CONFIG_HIGHMEM||||||}} is enabled.

Version 8.16.20 seems to fix the problem.

A workaround is to limit RAM by adding the {{bootparm|mem|864m}} kernel parameter.

===Display switching ===
The switching between internal and external display doesn't work, because the driver blocks messing around with the chipset via ACPI. If you want to use this feature (i.e. during presentations), you should use the VESA server instead (experienced with a R52, Kernel 2.6.11, xorg 6.8.2, fglrx 8.16.20).

== Patches ==
The following patches might be needed for certain versions of fglrx.
=== V 8.8.25 ===
* [http://www.rage3d.com/board/showthread.php?t=33798874 for kernels >= 2.6.10]
* [http://www.gehirn.org.uk/wiki/images/8.8.25-kernel-2.6.11+.patch For kernels >= 2.6.11-rc1]

== Beta Testing ==
The fglrx developers are looking for T Series users to take part in their beta program.

If interested, plese contact mtippett@ati.com.