Ubuntu
linux package

  1. Bug #2003031
  2. Comment #8

Comment 8 for bug 2003031

Revision history for this message
beadon (bryant-eadon) wrote : Re: gnome-shell crashes in the kernel at drm_atomic_check_only and the kernel says "adding CRTC not allowed without modesets: requested 0x4, affected 0x7"

Ok, I am getting a slightly different, but perhaps related problem with another USB-C / eGPU encapsulation (PCIE tunneles over USB-C basically) device.

I've done some testing with the Razer Core X Chroma, a USB-C connected Thunderbolt 3 eGPU enclosure. Reference to hardware is here : https://www.razer.com/gaming-egpus/Razer-Core-X/RC21-01430100-R3U1

I have 2x displays now connected to the internal PCIE nVidia TU117 [GeForce GTX 1650] loaded in the unit. The BIOS seems to work fine, , but when I get to the gnome login screen things hang. I am narrowing it down, but just like the display blanking on the Intel based on cursor location, I am seeing the same behavior with this enclosure - if at boot time the enclosure is connected, then the displays will lock up. If, I move the mouse to the right edge of the screen , the desktop will also lock up.

Attached are the logs of the attachment, then detachment of this enclosure. Note that on re-attaching the enclosure the USB devices which previously worked fine attached to the enclosure no longer function (perhaps not deregistered properly?).

Details for HW info

beadon@semiauto:~$ hwinfo --gfxcard --short
graphics card:
                       nVidia TU117 [GeForce GTX 1650]
                       Intel TigerLake-LP GT2 [Iris Xe Graphics]

Primary display adapter: #26