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Re: Grub interactive menu missing from Xen PVHVM DomU's 'serial console'

From: Andrei Borzenkov
Subject: Re: Grub interactive menu missing from Xen PVHVM DomU's 'serial console' output. All the other output is there - just the menu is missing?
Date: Tue, 26 Jan 2016 20:24:42 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1

26.01.2016 17:30, address@hidden пишет:
> Hi Andrei,
>>> Do I need to force the grubcli somehow?
>> Usually you press `c' while in menu.
> I didn't think that'd work cuz I don't HAVE a menu, but it does!

You have menu, it just is not visible.

>> Do you get output in GRUB CLI (I expect yes, because last line is
>> printed)? What is output of
>> terminal_output
>> terminfo
>> commands in GRUB CLI? 
>> Can you check whether anything is output on
>> Linux terminal that you use to connect to console (script or strace)?
> After pressing 'c' while I'm in the "blank space", this is what I get in the 
> Linux terminal
>                           GNU GRUB  version 2.02~beta2
>    Minimal BASH-like line editing is supported. For the first word, TAB   
>    lists possible command completions. Anywhere else TAB lists possible   
>    device or file completions. ESC at any time exits.                     
> grub>  terminal_output
> Active output terminals:
> serial console 
> Available output terminals:
> serial_com0 vga_text spkmodem mda_text gfxterm cbmemc audio 
> grub>  terminfo
> Current terminfo types:
> serial: vt100   ASCII   0x15
> serial_com0: vt100      ASCII   0x0
> grub> 

OK, so could you remove serial terminal so we are sure to have just one
unknown and run xl under script command, so we are sure to capture
everything that is output to the screen. Also what terminal emulator are
you using?

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