Kalle Olavi Niemitalo wrote:
This bug was triggered by different color depths in the two screens driven by the same MGA card. Is it even possible to configure the new version that way? The HowToRandR12 page recommends defining only a single screen in xorg.conf and then configuring multiple outputs while the X server is running.
Oh right, of course, it is not possible to do that. RandR 1.2 enforces the same depth on all outputs in a big single screen.
Being unable to define different screens is a problem because it makes xsm (of x11-utils 7.3+1) divide its window halfway between the two monitors.
Other people also don't like having a single screen for other reason. There were multiple complains on the upstream list or bugzilla but the devs still don't want to bring it back, they think the WM should implement an emulated multi-screen on top of RandR 1.2 multiple outputs.
One of the monitors I am using is a fixed-frequency HP A1097C, which does not support DDC. It thus appears I now have to set the modes in /etc/X11/xdm/Xsetup (attached).
You can also do that in xorg.conf using ModeLine and PreferredMode as explained in the HowToRandR12.
- I don't get a mouse cursor on the second monitor. At first I thought it might be some presentation feature, activated when the monitors are displaying the same picture otherwise. However it also happens when they are configured side by side.
Yes, we have bug report #457502 about this.
- If I configure "Virtual 2648 1024" to snugly fit the 1280x1024 and 1368x1024 pixel outputs side by side, the Debian logo in the xdm login window appears correct but the window itself is badly sheared, appearing as a centimeter-wide strip that wraps thrice through the sides of the screen.
Does it help if you use a "common" resolution such as 1280x1024 or 1024x768 instead of 1368x1024?
- The DoubleScan flag seems to be ignored on the VGA2 output. I am not entirely sure it worked in the previous version either. However, the same mode works correctly on the VGA1 output
I have no idea about this, feel free to open a new bug report about this one, either on bugzilla.freedesktop.org or here (and I will forward it on bugzilla.freedesktop.org).
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