[svlug] X Sessions

Scott DuBois sdubois at linux.com
Thu Nov 13 21:57:56 PST 2014

On 11/13/2014 09:25 PM, Marco Walther wrote:
> On 11/13/2014 08:57 PM, Scott DuBois wrote:
>> On 11/13/2014 07:59 PM, Marco Walther wrote:
>>> I just tried it with my laptop and it worked as expected. Running
>>> Kubuntu 14.04 with the binary NVidia driver, my normal display lives on
>>> vt7. Logging in @ vt2:/dev/tty2 and doing a startx :1 got me a complete
>>> new session (with my normal user). The DISPLAY environment there was :1
>>> as expected.
>>> -- Marco
>> Dude you ROCK! Now we're getting somewhere. Starting to look like maybe
>> switching to NVidia drivers maybe?
> What's your graphics chip set? That might really be a function of the
> graphics chip set/driver .... :-( Something has to keep the first
> session alive while you create the n-th. And all the programs running in
> all sessions expect `live' display access. So n X-displays require the
> chip set to accept n*load.
> Mine in a almost four year old Lenovo W510:
> [ 43679.724] (II) NVIDIA(0): NVIDIA GPU Quadro FX 880M (GT216GL) at
> PCI:1:0:0 (GPU-0)
> [ 43679.724] (--) NVIDIA(0): Memory: 1048576 kBytes
> [ 43679.724] (--) NVIDIA(0): VideoBIOS: 70.16.5f.00.0d
> [ 43679.724] (II) NVIDIA(0): Detected PCI Express Link width: 16X

description: VGA compatible controller
       product: G92 [GeForce 9800 GT] [10DE:614]
       vendor: NVIDIA Corporation [10DE]
       physical id: 0
       bus info: pci at 0000:01:00.0
       version: a2
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master
cap_list rom
       configuration: driver=nouveau latency=0

> Can you try something?
> * In your first X session, can you lock your screen. Do you see an
> option to start a new session on the lock-screen?  I do;-)

Yes. But when I start a new session and type in my password, the screen
flickers then sends me back to :0. Something is keeping me from
displaying a second graphics session.

Scott DuBois BSIT
President EBLUG
Freenode: Roguehorse

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