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TannerW avatar Ubuntu

Touchpad stops working and system ultimately crashes after plugging in USB-C device

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TannerW

After I plug in a USB-C device (at least two that have occurred this week, a VGA adapter, with and without the VGA plugged in, and an adapter which I plugged an SD card into) my touchpad becomes disabled on Ubuntu 20.04. I've tried a wireless mouse and that seems to work just fine, but it I continue working with that or by jumping around by abusing the tab button, the system ultimately locks up and I have to force power off by holding the power button. If I try to load up with the device still attached, I get through the grub menu (I have windows installed as well), but then the system seems to freeze at the Ubuntu logo, so I'm forced to power off, unplug, and reboot. The aforementioned VGA adapter was working a couple of months ago. I did recently switch my kernel to 5.14.15-051415-generic, to fix a problem with crashing after my laptop fell asleep. I've looked around and I can't find anything that pertains directly to my problem or has the correct diagnostics.

Does anybody know what may be causing this behavior and how I can fix it? Please let me know whatever diagnostics are needed and I'll provide those.

Update:

lsusb output

Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 001 Device 002: ID 04f2:b678 Chicony Electronics Co., Ltd LG Camera

Bus 001 Device 003: ID 8087:0aaa Intel Corp.

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

/var/log/syslog output:

Jan 8 15:51:08 Tanners-Computer kernel: [ 214.685336] invalid opcode: 0000 [#1] SMP NOPTI

Jan 8 15:51:08 Tanners-Computer kernel: [ 214.685350] CPU: 0 PID: 118 Comm: kworker/0:2 Not tainted 5.14.15-051415-generic #202111011158-Ubuntu

Jan 8 15:51:08 Tanners-Computer kernel: [ 214.685358] Hardware name: LG Electronics 17Z990-R.AAS7U1/17Z990, BIOS W1ZD1210 X64 03/25/2019

Jan 8 15:51:08 Tanners-Computer kernel: [ 214.685363] Workqueue: kacpid acpi_os_execute_deferred

Jan 8 15:51:08 Tanners-Computer kernel: [ 214.685375] RIP: 0010:acpi_ds_exec_end_op+0x182/0x779

I tried to isolate just the stuff that came out after I plugged in the device. Let me know if more is needed.

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Zeiss Ikon avatar
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Zeiss Ikon
That kernel isn't, AFAIK, a supported one for 20.04. I'm on the HWE stack, and I have 5.13.023 something, as I recall (not at home to check at the moment).
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matigo
There should be something in `/var/log/syslog` to explain the issue. This sounds like a old-fashioned IRQ collision. Could you also [edit] your question to include the output of `sudo lsusb`? This will show details about your USB devices, making it easier to see if there’s a hardware incompatibility
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TannerW avatar
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TannerW
Yeah, I hadn't ever messed with what kernel I was using until I had the problem with crashing after my laptop fell asleep and went looking for a fix. Switching to this current Kernel seemed to do the trick, so I didn't mess with it beyond that, although I guess it may be causing the current problem? I'll update the question with the syslog and lsusb outputs in a moment.
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