michael-vb | Hello again. I am here with a different issue: when I start a virtual machine in VirtualBox with vmgfx emulation and 3D enabled, my whole (Ubuntu 18.10) system hangs. With tjaalton's updated X server packages, but I doubt they are related. | 10:34 |
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michael-vb | I see some OOM killer entries in the system log, sometimes for the VM process, sometimes for Xwayland, but neither of those processes looks like it is OOM-ing the system based on the memory usage reported in the log entries. | 10:34 |
michael-vb | So wondering if anyone has an idea how I can debug this, or who else I could poke. The system is a Thinkpad T470 with HD Graphics 620. | 10:34 |
tjaalton | michael-vb: is it the host which hangs, or client? | 10:46 |
michael-vb | The host. | 10:46 |
michael-vb | Oh yes, and it happens with X or Wayland session, no matter. | 10:50 |
tjaalton | could be a bug in i915, hard to tell | 10:53 |
michael-vb | That was also my first guess. | 10:54 |
michael-vb | When the OOM killer hits the VM process the system recovers. When it hits Xwayland I can at least switch VTs. | 10:55 |
tjaalton | ok so it is oom related | 10:56 |
tjaalton | limit the display ram in vbox? | 10:56 |
michael-vb | The whole VM process is comfortably under host system RAM. | 10:58 |
michael-vb | Though it might be interesting to try increasing the VM VRAM. | 10:58 |
michael-vb | As I said, the OOM logs suggested that VBox was not using a lot of RAM. | 10:58 |
michael-vb | Or Xwayland for that matter. | 10:59 |
tjaalton | but sounds like they'd balloon and oom kills them | 10:59 |
tjaalton | or something | 11:00 |
michael-vb | Right, but it prints the amount of RAM they were using at kill time into the log. | 11:00 |
michael-vb | I am guessing that i915 starts swallowing system RAM and that the OOM killer then starts going for small-ish processes. It has also hit as and cpp. But that is just a guess so far. | 11:10 |
tjaalton | try #intel-gfx | 11:11 |
michael-vb | Thanks. | 11:11 |
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