| Bug ID | 102319 |
|---|---|
| Summary | Crashes and freezes when switching VTs |
| Product | DRI |
| Version | XOrg git |
| Hardware | Other |
| OS | All |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | General |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | marcin.marcin.m@gmail.com |
I have a weird problem while switching vts I have a dual-GPU setup: intel i5-5200U as the default OpenGL renderer and GeForce 940M as the discrete card. I'm using the intel modesetting driver for the Intel graphics and xf86-video-nouveau for DRI_PRIME. If I run SDDM/LXDM as my display manager (on Arch Linux), then switch the TTY to tty2, then switch back to tty7 (DM), I get only a blinking cursor. If I run LightDM as my display manager, it survives a tty switch, but if I start an X server in tty2 and then switch directly to tty7, LightDM crashes. If I switch tty2 -> tty3 (no x server) -> tty7, on the other hand, the DM does *not* crash. The whole problem doesn't occur when using the `nomodeset` kernel option, (i.e. when my DE runs in software rendering mode) Whenever I switch the ttys or when I launch the DM I get the following output in the dmesg log: https://pastebin.com/FgzZLEGg I asked about it on #nouveau and I was told that since the intel driver takes care of the rendering, it is the one to blame here. On the intel side, the problem occurs with both xf86-video-intel and the modesetting driver The problem only occurs with the X server that is launched by a DM. If I run startx directly from the tty on both vts, everything works correctly. It is not observed on a machine without nvidia graphics and with intel i5-7500K as the CPU/integrated GPU, with fairly same software stack. OS: Arch Linux, DE: Cinnamon
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