Qubes gui daemon doesn't work with startx

[jaspertron]

Disabling lightdm and using startx instead causes the gui daemon to fail because user can't create /var/run/shm.id:

shmoverride constructor running
shmoverride creating /var/run/shm.id: Permission denied

user@dom0 ~> qvm-start work
---snip---
--> Starting Qubes GUId...
Connecting to VM's GUI agent: .Missing /var/run/shm.id; run X with preloaded shmoverride
exiting
ERROR(work): Cannot start qubes-guid!

Would it make sense to use something like /var/run/qubes/shm.id instead?

[marmarek]

I don't really see why you'd want to disable graphical login manager just to start X right after login from text console...

But if you really like, feel free to send a patch (pull request). Make sure to adjust all the places:

[user@devel builder]$ make grep 'shm\.id'
qubes-src/core-admin/core-modules/000QubesVm.py:        elif not os.path.exists('/var/run/shm.id'):
qubes-src/core-admin/core-modules/01QubesDisposableVm.py:        if kwargs.get('start_guid', True) and os.path.exists('/var/run/shm.id'):
qubes-src/core-admin/core-modules/01QubesDisposableVm.py:        if kwargs.get('start_guid', True) and os.path.exists('/var/run/shm.id'):
qubes-src/gui-daemon/gui-daemon/xside.c:        f = fopen("/var/run/shm.id", "r");
qubes-src/gui-daemon/gui-daemon/xside.c:                    "Missing /var/run/shm.id; run X with preloaded shmoverride\n");
qubes-src/gui-daemon/gui-daemon/xside.c:                    "Invalid or stale shm id 0x%x in /var/run/shm.id\n",
qubes-src/gui-daemon/gui-daemon/xside.h:    uint32_t cmd_shmid;     /* shared memory id - received from shmoverride.so through shm.id file */
qubes-src/gui-daemon/shmoverride/README:(cmd_pages) and writes its shmid to /var/run/shm.id. All instances of
qubes-src/gui-daemon/shmoverride/shmoverride.c:#define SHMID_FILENAME "/var/run/shm.id"

[marmarek]

I don't really see why you'd want to disable graphical login manager just to start X right after login from text console...

But if you really like, feel free to send a patch (pull request). Make sure to adjust all the places:

[user@devel builder]$ make grep 'shm\.id'
qubes-src/core-admin/core-modules/000QubesVm.py:        elif not os.path.exists('/var/run/shm.id'):
qubes-src/core-admin/core-modules/01QubesDisposableVm.py:        if kwargs.get('start_guid', True) and os.path.exists('/var/run/shm.id'):
qubes-src/core-admin/core-modules/01QubesDisposableVm.py:        if kwargs.get('start_guid', True) and os.path.exists('/var/run/shm.id'):
qubes-src/gui-daemon/gui-daemon/xside.c:        f = fopen("/var/run/shm.id", "r");
qubes-src/gui-daemon/gui-daemon/xside.c:                    "Missing /var/run/shm.id; run X with preloaded shmoverride\n");
qubes-src/gui-daemon/gui-daemon/xside.c:                    "Invalid or stale shm id 0x%x in /var/run/shm.id\n",
qubes-src/gui-daemon/gui-daemon/xside.h:    uint32_t cmd_shmid;     /* shared memory id - received from shmoverride.so through shm.id file */
qubes-src/gui-daemon/shmoverride/README:(cmd_pages) and writes its shmid to /var/run/shm.id. All instances of
qubes-src/gui-daemon/shmoverride/shmoverride.c:#define SHMID_FILENAME "/var/run/shm.id"

[marmarek]

Thanks!
Since we want to release R3.2-rc2 today, it is too late for have it here. But if it will not be the final version (so there will be rc3), we can include it there.

[marmarek]

Thanks!
Since we want to release R3.2-rc2 today, it is too late for have it here. But if it will not be the final version (so there will be rc3), we can include it there.

[jpouellet]

Is this ready to be merged?

[jpouellet]

Is this ready to be merged?

[marmarek]

Just merged to master - will be in R4.0. But will not be backported to R3.2.

[marmarek]

Just merged to master - will be in R4.0. But will not be backported to R3.2.