[Spice-devel] Multi-head Spice

[Snir Sheriber]

On 02/28/2017 11:41 AM, Christophe de Dinechin wrote:
>
>> On 28 Feb 2017, at 08:58, Christophe Fergeau <cfergeau at redhat.com 
>> <mailto:cfergeau at redhat.com>> wrote:
>>
>> On Mon, Feb 27, 2017 at 04:18:12PM -0600, Jonathon Jongsma wrote:
>>> On Mon, 2017-02-27 at 17:53 +0100, Christophe de Dinechin wrote:
>>>> I tried to setup a multi-head guest, but I’m having trouble getting
>>>> multiple displays to work correctly
>>>>
>>>> For Jonathon, the part that I had trouble with was adding “heads =
>>>> ‘4’" to the video / QXL configuration. I don’t see it documented in
>>>> https://www.spice-space.org/spice-user-
>>>> manual.html#_multiple_monitor_support.
>>>
>>> Yep, it's a fairly new feature. I'm working on additional multi-monitor
>>> documentation and will be sure to include that.
>>
>> Yep, we totally missed it when 'heads' support was added :( virt-manager
>> UI needs to be able to set this too..
>>
> Ah, that was my next question ;-)
>
>
>>>
>>>>
>>>> For Christophe F, what I get with the configuration file http://paste
>>>> bin.com/FEXbjaE3 <http://bin.com/FEXbjaE3> is shown in the 
>>>> following picture https://redskincat
>>>> .wordpress.com/2017/02/27/learning-more-about-mesa/#jp-carousel-1224 
>>>> <http://wordpress.com/2017/02/27/learning-more-about-mesa/#jp-carousel-1224>.
>>>> As far as I remember, this is pretty much a default configuration of
>>>> Fedora 25 after install from the live CD. If I understand correctly,
>>>> the difference with you is that I actually installed.
>>>>
>>>> Does anybody else see this? If not, what could be wrong with my
>>>> setup?
>>>>
>>>
>>> I don't see anything obviously wrong with the configuration. If you
>>> close the spice client and immediately re-connect does it still show
>>> the same thing in both windows?
>>>
>>> Can you capture the debug output of running virt-viewer with the --
>>> debug and --spice-debug options while you enable the second monitor?
>>> That might give a clue about what's happening.
>>
>> Also, what window manager are you using on the client? The window
>> decorations don't look like default GNOME setup? The linux client is
>> running on bare-metal, not in an osx VM?
>
> This is Cinnamon. The Linux client is running on the same Fedora 25 host.

My client is on cinnamon too...   i forgot to mention it :-[

>
> So I thought I’d test with Gnome. It did not let me log-in. Tried with 
> Gnome on Xorg. Same. Could not log in in Cinnamon anymore either… So I 
> rebooted. And my machine landed in the emergency shell. My journalctl 
> log is full of btrfs errors. The machine seems pretty sad.
>
> Of note, this was my “stable” Linux machine so far, the only one that 
> did not have some flaky component… I have three hosts (four if you 
> include the Mac), they all have something wrong:
>
> - The “Shuttle” machine is unstable, always have been. I hoped it 
> would improve by swapping RAM or graphic card, but did not.
>
> - The “Big” machine has new “bad sectors” on the boot hard disk daily. 
> I have bought a new disk, did not have time to install it yet.
>
> - The “Muse” machine I was using here was the most stable one, if the 
> oldest. So far, it had performed flawlessly. Grrr.
>
> If I can bring Muse back up, I’ll tell you if the result is different 
> on Gnome. Meanwhile, I’ll try the heads=4 setup on a new VM on Big 
> (which is Gnome by default)
>
>
> Christophe
>
>
>
>
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