zfsloader: messy output on Dell iDrac serial console
Daniel Braniss
danny at cs.huji.ac.il
Sat Apr 7 06:35:24 UTC 2018
> On 7 Apr 2018, at 7:21, Julian Elischer <julian at freebsd.org> wrote:
>
> running on *some* Dell servers the serial console looks messed up at the time of the FreeBSD menu.
> it looks like it's dropping (or adding? but that's less likely) characters.
>
> | 5. [K]ernel: kernel (1 of 2) | .- . -.
> | 6. Configure Boot [O]ptions... |2 --| y/ -. -/` -o/
> |137. Select Boot [E]nvironment... | `:` `:` ::/sy++:.
> | H| .-- `--. -- /6H`: :`
> | | .---.....----.
>
> IS there an RTS/CTS input we should be attending to?
>
> I will add that some of the other modules (e.g. the mfi raid setup section) also get affected,
> so it's not just a bug in our code.
I’m using Serial-Over-LAN via ipmi/drac and am noticing this too on a Dell C6220,
don’t know when this started though, It’s only recently that I’m working on
this kind of hosts. It drives the xterm/rxvt crazy, but it’s only the output from the
boot/loader, once the kernel takes over, all is back to normal. the serial speed is
set to 115200, but changing it as far as i remember did not help. will try lowering soon.
I had to disable the menu to get some sense of the output, and usually have to hit ^B to remove most of the
garbage.
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