Red Hat Bugzilla – Bug 408081
X11 mode switching problems
Last modified: 2009-01-09 02:29:37 EST
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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:188.8.131.52) Gecko/20071030 Fedora/184.108.40.206-2.fc8 Firefox/220.127.116.11
Description of problem:
CTRL-ALT-KEYPADPLUS/CTRL-ALT-KEYPADMINUS mode switching does not work (striking keys does nothing) after a fresh install of Fedora 8 on a system (ViewSonic P225f-5 monitor, ATI Technologies Inc Radeon R350 (Radeon 9800) video card) that was having no such problems with Fedora 7. I have been able to correct some of the problems but not all.
My monitor (ViewSonic P225f-5) lost its DDC capability (does not report scan frequency tolerances) while using Fedora 7, and with it the X server's ability to support many modes. I corrected this using system-config-display and manually choosing this monitor and its highest supported resolution. However, this workaround does not work in Fedora 8. Nor does the Fedora 8 problem seem related to this monitor because another well-behaved monitor (ViewSonic PS790) also worked on Fedora 7 but not on Fedora 8.
I installed the livna-packaged fglrx driver which fixed this problem but made it impossible to run compiz (compiz (core) - Fatal: GLX_EXT_texture_from_pixmap is missing). I reinstalled Fedora 8 (because I could do it quicker than figuring out how to revert to the original radeon driver) and updated to xorg-x11-drv-ati-6.7.196-1.fc8. I was then able to get support for multiple resolutions for the ViewSonic P225f-5 but only after manually adding an appropriate "Virtual xdim ydim" directive to /etc/X11/xorg.conf (why?). I have not been able to get it to work with the ViewSonic PS790 (why?).
Even though I can switch between multiple resolutions on my ViewSonic P225f-5, panning through the virtual desktop does not work whether using the default metacity window manager or the (desktop effects) compiz window manager.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install Fedora 8 on like system (see above)
2. Note failure of CTRL-ALT-KEYPADMINUS behavior
# Xorg configuration created by pyxf86config
Identifier "Default Layout"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
Option "XkbModel" "pc105"
Option "XkbLayout" "us+inet"
ModelName "ViewSonic P225f-5"
# the ViewSonic P225f monitor's DDC stopped reporting its attributes!
# (see /var/log/Xorg.*.log).
# without knowing the scanning bounds, xorg will be very conservative
# and limit the display to 800x600.
# this can be corrected by adding a properly configured Monitor section
# and associating it with the Screen.
# system-config-display can be used
# or we can use /usr/share/hwdata/MonitorDB:
# ViewSonic; ViewSonic P225f-5; VSC8012; 30-127; 50-160
# to specify HorizSync and VertRefresh.
HorizSync 30.0 - 127.0
VertRefresh 50.0 - 160.0
# specify the Gamma appropriate for this videocard/monitor.
Viewport 0 0
Modes "2048x1536" "1920x1440" "1856x1392" "1792x1344" "1600x1200" "1400x1050" "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "640x480"
# ? default Virtual X Y should accomodate above Modes but ...
Virtual 2048 1536
I have another system (HP L2035 Flat Panel Monitor and Intel Corporation
82945G/GZ Integrated Graphics Controller) that worked fine on Fedora 7 but has
been broken by Fedora 8. I cannot get CTRL-ALT-KEYPADMINUS to do anything. I
have tried manually configuring the display with system-config-display to no avail.
On the system (ViewSonic P225f-5 monitor, ATI Technologies Inc Radeon R350
(Radeon 9800) video card) that I have got zoom (but not pan) to work, there is
When zoomed, sometimes the bottom panel (which should be anchored to the bottom
of the virtual desktop offscreen) is floating somewhere in the middle of the
screen. And when I move the cursor over it it appears to "autounhide/autohide"
(moves up and down) over and over again without any further cursor movement.
This message is a reminder that Fedora 8 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
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Fedora 8 changed to end-of-life (EOL) status on 2009-01-07. Fedora 8 is
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