Red Hat Bugzilla – Bug 476657
It is not possible to use two independent screens anymore
Last modified: 2018-04-11 03:49:56 EDT
Created attachment 327102 [details]
Description of problem:
After upgrading to F-10, Xorg doesn't recognize my dual-head configuration for
two independent screens and displays the same image on both monitors. If I go back
to F-9 Xserver and ATI driver, it works OK, so it's plainly a regression.
Version-Release number of selected component (if applicable):
Version-Release number of working component:
Steps to Reproduce:
1. Have a dual-head ATI graphic card and two monitors.
2. Install above-mentioned F-10 xorg-x11-* packages.
3. Copy attached xorg.conf to /etc/X11/xorg.conf .
4. Start X.
One screen mirrored on both monitors is shown.
Two independent screens are shown, one on each of the monitors.
Don't say to me I should use RandR and one virtual screen. I _want_ two independent screens.
Created attachment 327103 [details]
Xorg.0.log of Xorg 1.5.2 (from F-9)
Created attachment 327104 [details]
Xorg.0.log of Xorg 1.5.3 (from F-10)
*** Bug 476783 has been marked as a duplicate of this bug. ***
does booting with nomodeset on the kernel command line bring back the old behaviour?
This report does not seem to be the same problem as my report (bug 476783) at all.
As I reported, it does either clone mode or two-screens mode just the same as it did before. My only problem is the colors on the second screen. Booting with nomodeset disables the fancy graphical boot, so the second monitor stays off during booting, but once X (gdm) starts it behaves exactly as I reported before.
dtardon->airlied: Yes, it does. Thanks!
Created attachment 327300 [details]
Xorg.0.log of Xorg 1.5.3 when booted with nomodeset
*** This bug has been marked as a duplicate of bug 464896 ***