Dual Display problems in 12.10 and Raring

[Colin Law]

On 4 March 2013 21:35, Ric Moore <wayward4now at gmail.com> wrote:
> On 03/04/2013 05:21 AM, Colin Law wrote:
>>
>> Is anyone using dual displays in Raring alpha (or 12.10 for my second
>> issue) seeing the problems that I am?  Firstly, with the launcher on
>> the right hand display it is impossible to place anything (shortcuts,
>> files etc) on the left hand display, they bounce back tot the right
>> hand one when an attempt is made to place them there [1].  This is a
>> new bug on Raring.  The second one however [2] is equally annoying and
>> has been around since 12.10.  If, for example, two firefox windows are
>> opened, one on each display, and the FF launcher icon is clicked then
>> the focus always goes to the one on the same display as the launcher,
>> whichever FF window last had the focus.  This is not specific to FF,
>> it applies to any application.
>>
>> No-one so far has confirmed the bugs.  There was a big push to get
>> dual display support working well for 12.04 (if I remember correctly)
>> but things seem to have gone downhill since then.
>>
>> I am using Intel graphics.
>
>
>
> I dunno, but I do know I have to use nVidia's configuration app, after
> loading the driver, to turn on twinview support. It sounds like you have one
> monitor as mirror to the other primary one?

No, normal side-by-side monitors.  As I said it all works perfectly
apart from the two problems above.

>
> Now that I have three monitors with two identical nVidia cards, I have to
> use xinerama to run all three screens as one desktop window. That does seem
> to incur a performance hit.
>
> Without having some sort of driver supported app, I would suggest you google
> on xrandr as that might actually be a better way to go. I'm looking into
> that myself. There are several gui's for xrandr in the repos. I tried one
> but it didn't get there for me. Not yet. YMMV, Ric

As I said, the basic dual display operation is working fine, just the
specific issues I have described (possibly not very well described
given the confusion).

Colin