I am now using Ubuntu 14.04 from the link above. At the time of starting this bug report I was using 13.04 (raring) and then also 13.10 (saucy) but the problem was the same with both. Will see how will it be with 14.04. So far I have noticed one difference though! If I did cat /sys/kernel/debug/vgaswitcheroo/switch on 13.04 and 13.10 I got:
0:IGD:+:Pwr:0000:00:02.0 1:DIS: :Off:0000:01:00.0 With 14.04 I get somethin a bit different: 0:IGD:+:Pwr:0000:00:02.0 1:DIS: :DynOff:0000:01:00.0 Notice the Dyn in second line. This is ofcourse before installing AMD drivers. After I install those, vgaswitcheroo is no longer there. For now, I will not install AMD drivers on 14.04 to see if the problem will come up out-of-the-box. If I don't see any troubles for a whole week, I will install AMD drivers and provide feedback about both. If problems come up before, I will install AMD drivers right after. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1293425 Title: [Dell Vostro 3550] Display resolution keeps switching with external monitor connected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1293425/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
