On 21 September 2014 12:35, Matthias Klein email@example.com wrote:
I tried to switch on my Lenovo L530 Notebook from Debian testing (KDE) to Arch Linux. Installation was no problem, but when I connect a second monitor to the VGA port the whole system gets very slow / unuseable. (The same hardware constalation works without problems under Debain testing.)
I know this is not very helpful, but I noticed exactly the same thing with my Asus UL30A this weekend (and KDE, too). I know it used to work before, but I haven't used the second monitor for a long time, so it may be broken for quite some time.
I have found only a partial solution, and that is to disable effects before connecting a monitor. After the second screen is connected, even the cursor movement becomes unbelievably choppy, but after a while everything goes to normal for me. When I left the effects on, the system stayed unusable.