Red Hat Bugzilla – Bug 468296
videocard goes to strange mode (works well with radeonhd)
Last modified: 2018-04-11 04:25:40 EDT
I have Radeon HD 3300 on ASUS M3A78-T
(--) PCI:*(0@1:5:0) ATI Technologies Inc Radeon HD 3300 Graphics rev 0, Mem @ 0xd0000000/268435456, 0xfe9f0000/65536, 0xfe800000/1048576, I/O @ 0x0000d000/256
when I start X it is working OK in expected 1280x1024 mode, 24 color depth.
everything is OK.
But when I change screen mode
by using either Alt-Ctl-+ or
Alt-Ctl-F2 and then back Alt-Ctl-F7
the videocard goes to a very strange mode with blurry screen
and colordepth about 8bit or less.
There is no way to get it working again except doing
Ctl-Alt-backspace and start X over.
very annoying. I cannot switch to console without breaking X.
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) 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 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 321422 [details]
motherboard & videocard specification
Created attachment 321423 [details]
The Xorg.0.log was obtained as:
I started X (everything is OK) then types
Alt-Ctl-+ several times to change screen mode.
After first mode switch the screen became barely readable.
Created attachment 321424 [details]
without xorg.conf file the X server does not start at all.
Fatal server error:
no screens found
If in autogenerated xorg.conf I replace
it starts working and shows the described problem.
After I installed
the card started working OK when switching resolution.
The ati driver does not work at all.
Created attachment 321504 [details]
The radeonhd driver, which I installed manually,
looks to be working OK.
Autodetected vesa & ati have problems.
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