Crazy question regarding refresh and X

Mike Klinke lsomike at futzin.com
Sun Sep 12 20:31:25 UTC 2004


On Sunday 12 September 2004 10:04, Jim Cornette wrote:
 
> Quite an ugly picture. I doubt that this performance would bring
> anyone over to xorg-x11.
> Thanks for the tests relating to dri. 

My pleasure!
 
I've updated the bugzilla I started at:

https://freedesktop.org/bugzilla/show_bug.cgi?id=1333

to include the information below. Hope this will help to find the 
problems!  

================================================

Tested three different graphics configurations:
(all are at 1024x768)

16 Bit, DRI = No.
16 Bit, DRI = Yes.
24 Bit.

*****************
16 Bit, DRI = No.
*****************

Open up a terminal session

The sequence:
<CTRL><ALT><F1>

Took me to the text login screen.

<CTRL><ALT><F7>

Brought me back to the terminal session I left.

During the terminal session I ran glxgears and an odd thing happened 
when I exited the program. Notice the last line here:

-------------------------------------
[root at linmaster log]# glxgears
771 frames in 5.0 seconds = 154.200 FPS
600 frames in 5.0 seconds = 120.000 FPS
720 frames in 5.0 seconds = 144.000 FPS
600 frames in 5.0 seconds = 120.000 FPS
600 frames in 5.0 seconds = 120.000 FPS
720 frames in 5.0 seconds = 144.000 FPS
600 frames in 5.0 seconds = 120.000 FPS
600 frames in 5.0 seconds = 120.000 FPS
600 frames in 5.0 seconds = 120.000 FPS
X connection to :0.0 broken (explicit kill or server shutdown).
---------------------------------------

The attachment in comment #
contains; xorg.conf, Xorg.0.log, and dmesg


******************
16 Bit, DRI = Yes.
******************

This is my normal setup mode.  I have booted this computer 100's
of times into this mode without problem until today (after the
24 Bit test below)

Open up a terminal session

The sequence:
<CTRL><ALT><F1>

Took me to the text login screen.

<CTRL><ALT><F7>

Caused the computer to lock up without re-displaying the graphical
login screen.  I had to reboot.

The attachment in comment #
contains; xorg.conf, Xorg.0.log, and dmesg


******
24 Bit
******

This was a disaster.  All the nastiness described in
https://freedesktop.org/bugzilla/show_bug.cgi?id=1232
occurred;i.e. the slowness and refresh problems.

The attachment in comment #
contains; xorg.conf, Xorg.0.log, and dmesg

What's also puzzling, is that even the 16Bit, DRI=Yes mode
above was a problem after running this configuration
(slowness and refresh problems).  I finally had
to do a cold boot in order to restore things to working condition.
(Mounting the root partition on another OS (FC1) and copying the 16 
Bit, DRI=Yes Xorg.conf file into place and then reboot into Fedora 
Core 3

Also of note is the fact that I am certain that I've run 24 Bit
graphics on an earlier version of Xorg-X11 software without 
problems.  If it will be of use to troubleshoot this problem I'll 
be happy to roll back to earlier versions of Xorg-X11* software.





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