Red Hat Bugzilla – Bug 485275
[RV730] Horrible 2D performance
Last modified: 2018-04-11 02:48:48 EDT
Description of problem:
2D performance is so low the system is almost unusable. No such problem with a rather similar RV770 card.
02:00.0 VGA compatible controller : ATI Technologies Inc RV730 PRO [Radeon HD 4650] [1002:9498]
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Start X
Performance should be comparable to RV770.
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.
Please attach your X server config file (/etc/X11/xorg.conf, if available) and X server log file (/var/log/Xorg.*.log) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link below.
Could you please also try to run without any /etc/X11/xorg.conf (if you have one) whatsoever and let X11 autodetect your display and video card? Attach to this bug /var/log/Xorg.0.log from this attempt as well, please.
We will review this issue again once you've had a chance to attach this information.
Thanks in advance.
Created attachment 331792 [details]
/var/log/Xorg.0.log with no xorg.conf
Add the Xorg log, with no xorg.conf used.
Well, we told you so ;-)
> (WW) RADEON(0): R600 support is mostly incomplete and very experimental
Passing to developers.
Any update on this issue ?
Looking carefully at the log, I noticed DRI and AIGLX were enabled (with a software rasterizer which does not even work properly - trying to enable compiz results in a white screen that is very difficult to get out of), but disabling them did not help performance.
Created attachment 333600 [details]
Xorg.0.log with no xorg.conf file
I have a somewhat related issue with the ATI RADEON HD 4650 1GB PciE.
I have just installed a new FC10 x86_64 from the installation DVD.
The first screen was displayed with X.
I have requested in it the first option to upgrade or install a new system.
The next screen was a tty screen regarding media verification which I skipped.
the next step was that anaconda has been run.
At the end of the anaconda run a message "X failed to start" has been displayed.
From this point and on the installation continued in text mode.
The final login mode was text mode (init level 3).
After installation completion a full system update has been done using yum.
Next step was to test X. For this I have issued the startx command.
The startx command started to execute, w white screen has been displayed all over my physical display and it just hang in this stage.
I have exited the startx using alt+ctrl+bs.
This has been done with no xorg.conf file.
Looking in the Xorg.0.log file, it seems that bothe the adapter and the display have been properly detected. However there are errors regarding all possible display resolutions in the log file.
At this stage I am not able to switch the graphical mode.
I am attaching my Xorg.0.log file.
Any help will be appreciated.
Have you tried the radeonhd driver? It should have better support for these cards.
For #6, the initial F10 does not support RV730. Add vga=795 to the boot line to use vesa, update, and it should work (only slightly faster than vesa ...).
I am using rawhide on my RV770, and with the very latest xorg-x11-drv-ati-6.11.0-7, both EXA and xv finally work, and everything is really really fast. Good job Dave. Of course, I can't test with the RV730 right now.
I know I will never get any answer after one month politely ignoring this BZ, but I'll ask anyway: is there any chance the R600+ support gets ported to F10 ?
I wasn't ignoring it, I just wasn't able to do anything about it.
Now AMD have released the code, I've put in into rawhide thus fixing bugs.
However the code isn't ready for an F10 backport, maybe it will be by the time F11 ships, but not yet. It doesn't even suspend/resume properly yet.
I just tested rawhide with the RV730, and both EXA and XV are functional (no surprise). Speed is good. For whatever reason, there seems to be more tearing moving windows around than on the RV770.
Although it may not suspend/resume (I really don't see the point of suspend/resume personally ...), the current F10 driver looks really bad to me for R700.
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