https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264267
--- Comment #33 from commit-h...@freebsd.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=8ea7fa16d9fe5acb7d42a223efbfa23627aa5e0c commit 8ea7fa16d9fe5acb7d42a223efbfa23627aa5e0c Author: Wei Hu <w...@freebsd.org> AuthorDate: 2023-03-14 15:49:33 +0000 Commit: Wei Hu <w...@freebsd.org> CommitDate: 2023-03-18 07:07:54 +0000 uart: Don't change settings or throttle putc for Hyper-V Azure setup does not like it when FreeBSD overrides the settings of the UART device. When Hyper-V is detected, don't do this and also don't throttle putc() output. This is a workaround for the early boot hang of FreeBSD on Azure. Tested on Azure, ESXi (VM with serial port), and SG-8200 PR: 264267 Reviewed by: kevans, whu Tested by: whu Obtained from: Rubicon Communications, LLC (Netgate) MFC after: 2 weeks Sponsored by: Rubicon Communications, LLC (Netgate) sys/dev/uart/uart_dev_ns8250.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) -- You are receiving this mail because: You are the assignee for the bug.