Xenial freeze if I plug a second monitor

[Gérard BIGOT]

Hi,

I get the same behaviour here. Xenial uptodate. Dell Latitude E6230. Dock
station, with two screen HP LP2065.

If I boot the laptop on the dock, it freezes on login screen.

I use full disk LUKS, I can enter LUKS Password.

It's a hard freeze, no console access (ctrl+alt+fx doesn't switch).  I get
just the underscore line of a prompt, not blinking. I never tried if I
could ssh in.

If boot outside dock (LUKS+lightdm password) , I can dock the laptop after
boot, the screens light up , and I can start working.

It's a new behaviour of the two last kernels, I guess. Before I could boot
docked, but I had two use unity-control-center/display in order to sort
screens out.

Gerard.

2016-03-07 15:16 GMT+01:00 Martinx - ジェームズ <thiagocmartinsc at gmail.com>:

> On 7 March 2016 at 05:54, Colin Law <clanlaw at gmail.com> wrote:
>
>> On 7 March 2016 at 00:01, Martinx - ジェームズ <thiagocmartinsc at gmail.com>
>> wrote:
>> > Guys,
>> >
>> >  I'm trying to use my second monitor under Xenial (fully upgraded) but,
>> it
>> > freezes if I plug the second monitor.
>> >
>> >  I'm using it on a brand new Macbook Pro (2015).
>> >
>> >  Any thoughts? Is this a know bug?
>>
>> There have been bugs in that area but for me it is all working now.
>> What happens if you boot with the second monitor plugged in?
>>
>> Colin
>>
>
> If I boot / power it on, with second monitor already plugged in, it
> freezes on login screen / lightdm.
>
> Thiago
>
> --
> Ubuntu-devel-discuss mailing list
> Ubuntu-devel-discuss at lists.ubuntu.com
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-devel-discuss/attachments/20160307/3d828d81/attachment.html>