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cruzpach

Member

Registered: 2019-01-15

Posts: 6

Looking-glass failed to run

I have been trying to fix a problem with a virt-manager, where the VM windows would only have an option for a resolution of 800x600 pixels. I have been reading that I could use looking-glass to solve this problem, but when while trying to run the VM I get the following error:

Error starting domain: internal error: process exited while connecting to monitor: 2019-01-19T19:41:06.564123Z qemu-system-x86_64: -object memory-backend-file,id=shmmem-shmem0,mem-path=/dev/shm/looking-glass,size=33554432,share=yes: can't open backing store /dev/shm/looking-glass for guest RAM: Permission denied

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 75, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 111, in tmpcb
    callback(*args, **kwargs)
  File "/usr/share/virt-manager/virtManager/libvirtobject.py", line 66, in newfn
    ret = fn(self, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/domain.py", line 1400, in startup
    self._backend.create()
  File "/usr/lib/python3.7/site-packages/libvirt.py", line 1080, in create
    if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirt.libvirtError: internal error: process exited while connecting to monitor: 2019-01-19T19:41:06.564123Z qemu-system-x86_64: -object memory-backend-file,id=shmmem-shmem0,mem-path=/dev/shm/looking-glass,size=33554432,share=yes: can't open backing store /dev/shm/looking-glass for guest RAM: Permission denied

This is the output of "looking-glass-client

[i]               main.c:757  | run                            | Looking Glass ()
[i]               main.c:758  | run                            | Locking Method: Atomic
[i]               main.c:751  | try_renderer                   | Using Renderer: EGL
[i]               main.c:824  | run                            | Using: EGL
[E]               main.c:715  | map_memory                     | Failed to map the shared memory file: /dev/shm/looking-glass
[E]               main.c:920  | run                            | Failed to map memory
[cruzpach@Cheetah-Arch shm]$ sudo looking-glass-client
[sudo] password for cruzpach: 
[i]               main.c:757  | run                            | Looking Glass ()
[i]               main.c:758  | run                            | Locking Method: Atomic
[i]               main.c:751  | try_renderer                   | Using Renderer: EGL
[i]               main.c:824  | run                            | Using: EGL
[E]               main.c:715  | map_memory                     | Failed to map the shared memory file: /dev/shm/looking-glass
[E]               main.c:920  | run                            | Failed to map memory

Any suggestions?