I updated the firmware via the instructions here: https://wireless.wiki.kernel.org/en/users/drivers/ath10k/firmware
It didn't help. I looked at journalctl --follow and dmesg before and after the connections drops when downloading the large file, and no error messages appear. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1853005 Title: Wifi drops out randomly and at large bandwidth usage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1853005/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs