I am encountering a video bug on my Fedora 13 desktop using the Radeon driver. Once in a while, the screen goes blank in a way that hitting a key or moving a mouse does not undo. I don't think that this blanking is aligned with normal screen blanking.
I was given a suggestion. When this blanking has happened, I ssh into this machine from another and issue the following commands. The screen will then unblank: DISPLAY=:0.0 xrandr --output DVI-1 --mode 1280x800 sleep 5 DISPLAY=:0.0 xrandr --output DVI-1 --mode 2560x1600 But that's not what I'm actually writing about -- that's just preamble. I want to be able to use ctrl-alt-+ or ctrl-alt-- to cycle between X modes (resolutions etc). This should allow me to fix the display from the keyboard of the afflicted machine by blindly typing ctrl-alt-+ twice (with this display there are only two modelines synthesized by X). ctrl-alt-+ does not work for me on F13. I don't know when it disappeared. Perhaps when ctrl-alt-backspace was retired. After spelunking, I find that there is an xorg.conf option "DontZoom" that is similar the "DontZap" (the one that can allow ctrl-alt-backspace to work again). Of course that means you need an /etc/X11/xorg.conf, something that has mostly disappeared with recent versions of the xorg system. You can generate one by: yum install system-config-display system-config-display --noui Then you edit in this section: Section "ServerFlags" Option "DontZoom" "false" EndSection There ought to be a better way just as there is for DontZap. Worst of all, it still doesn't work. Even though /var/log/Xorg.0.log shows that X accepted the option. I tried xev to find out what keysyms were being generate: KeyPress event, serial 33, synthetic NO, window 0x3800001, root 0xf9, subw 0x0, time 23518785, (1400,548), root:(1662,639), state 0x10, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 33, synthetic NO, window 0x3800001, root 0xf9, subw 0x0, time 23518788, (1400,548), root:(1662,639), state 0x18, keycode 37 (keysym 0xffe3, Control_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 33, synthetic NO, window 0x3800001, root 0xf9, subw 0x0, time 23521050, (1400,548), root:(1662,639), state 0x1c, keycode 86 (keysym 0x1008fe22, XF86_Next_VMode), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False It looks as if the required keysym is being generated (XF86_Next_VMode). Why isn't the screen resolution changed? Is this documented anywhere? -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines