Help me please!

Help me please!

[Juan David Alejandro Cadena Cedano]

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Hi!


I want to enable usb serial ... as it appears on the page:
http://www.coreboot.org/GRUB2, but the terminal_output command print it:


"Active output Terminals:

vga_text

Available output terminals:

gfxterm spkmodem serial_ * mda_text cbmemc serial audio"



then ls command print it:

"(usb0) (memdisk)"



but when I write "serial --speed=115200 --word=8 --parity=no --stop=1 usb0"
this print it:

"serial port 'usb0' is not found"



My computer is an Acer c710-2847 and it has a chromium OS, I wanted to add
the seaBios to install Ubuntu from USB, but I overwrote the flash ROM and
now my computer will not start, the seaBios not working. Not even shows me
the options to choose... therefore I can't read the USB. I don't know what
to do; I don't know how to come back to "Chrome OS" and I can't boot from
the USB ...the only option is to use the GRUB2 command-line but I don't
know how to use the serial usb on grub2

I thank you so much

-- 
*Juan David Alejandro Cadena Cedano*

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Re: Help me please!

[Gregg Levine]

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Hello!
I see.
You do realize that this isn't the Coreboot List, but one on GRUB2? You
will need to join that list and explain your problems to them, in plain
text, not HTML formatted e-mail. And using the exact same steps that you
used to create that problem.

It may be possible then to revert back to your original OS, however from
this perspective it sadly isn't. And especially not from reading something
in HTML mail.

-----
Gregg C Levine gregg.drwho8@gmail.com
"This signature fought the Time Wars, time and again."


On Sat, Feb 15, 2014 at 3:13 PM, Juan David Alejandro Cadena Cedano <
jacadenac@unal.edu.co> wrote:

> Hi!
>
>
> I want to enable usb serial ... as it appears on the page:
> http://www.coreboot.org/GRUB2, but the terminal_output command print it:
>
>
> "Active output Terminals:
>
> vga_text
>
> Available output terminals:
>
> gfxterm spkmodem serial_ * mda_text cbmemc serial audio"
>
>
>
> then ls command print it:
>
> "(usb0) (memdisk)"
>
>
>
> but when I write "serial --speed=115200 --word=8 --parity=no --stop=1
> usb0" this print it:
>
> "serial port 'usb0' is not found"
>
>
>
> My computer is an Acer c710-2847 and it has a chromium OS, I wanted to add
> the seaBios to install Ubuntu from USB, but I overwrote the flash ROM and
> now my computer will not start, the seaBios not working. Not even shows me
> the options to choose... therefore I can't read the USB. I don't know what
> to do; I don't know how to come back to "Chrome OS" and I can't boot from
> the USB ...the only option is to use the GRUB2 command-line but I don't
> know how to use the serial usb on grub2
>
> I thank you so much
>
> --
> *Juan David Alejandro Cadena Cedano*
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> https://lists.gnu.org/mailman/listinfo/grub-devel
>
>

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Re: Help me please!

[Aleš Nesrsta]

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Hi Juan,

I fully agree with Gregg Levine remarks.

But, for the first look, I maybe see your mistake in GRUB "serial"
command, so there is my first aid:

> but when I write "serial --speed=115200 --word=8 --parity=no --stop=1 usb0"
> this print it:
> 
> "serial port 'usb0' is not found"

Try "serial_usb0" instead of "usb0".

BR,
Ales



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Re: Help me please!

[Vladimir 'φ-coder/phcoder' Serbinenko]

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On 16.02.2014 04:53, Gregg Levine wrote:
> Hello!
> I see.
> You do realize that this isn't the Coreboot List, but one on GRUB2? You
> will need to join that list and explain your problems to them, in plain
> text, not HTML formatted e-mail. And using the exact same steps that you
> used to create that problem.
> 
Apparently user has a problem with GRUB2-as-payload which makes it
appropriate for this list.
> It may be possible then to revert back to your original OS, however from
> this perspective it sadly isn't. And especially not from reading
> something in HTML mail.
> 
> -----
> Gregg C Levine gregg.drwho8@gmail.com <mailto:gregg.drwho8@gmail.com>
> "This signature fought the Time Wars, time and again."
> 
> 
> On Sat, Feb 15, 2014 at 3:13 PM, Juan David Alejandro Cadena Cedano
> <jacadenac@unal.edu.co <mailto:jacadenac@unal.edu.co>> wrote:
> 
>     Hi!
> 
> 
>     I want to enable usb serial ... as it appears on the page:
>     http://www.coreboot.org/GRUB2, but the terminal_output command print
>     it:
> 
> 
>     "Active output Terminals:
> 
>     vga_text
> 
>     Available output terminals:
> 
>     gfxterm spkmodem serial_ * mda_text cbmemc serial audio"
> 
>      
> 
>     then ls command print it:
> 
>     "(usb0) (memdisk)"
> 
>      
> 
>     but when I write "serial --speed=115200 --word=8 --parity=no
>     --stop=1 usb0" this print it:
> 
>     "serial port 'usb0' is not found"
> 
>      
> 
>     My computer is an Acer c710-2847 and it has a chromium OS, I wanted
>     to add the seaBios to install Ubuntu from USB, but I overwrote the
>     flash ROM and now my computer will not start, the seaBios not
>     working. Not even shows me the options to choose... therefore I
>     can’t read the USB. I don’t know what to do; I don’t know how to
>     come back to "Chrome OS" and I can’t boot from the USB ...the only
>     option is to use the GRUB2 command-line but I don’t know how to use
>     the serial usb on grub2
> 
> 
>     I thank you so much
> 
>     -- 
>     /Juan David Alejandro Cadena Cedano/
> 
>     _______________________________________________
>     Grub-devel mailing list
>     Grub-devel@gnu.org <mailto:Grub-devel@gnu.org>
>     https://lists.gnu.org/mailman/listinfo/grub-devel
> 
> 
> 
> 
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> https://lists.gnu.org/mailman/listinfo/grub-devel
> 



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Re: Help me please!

[Vladimir 'φ-coder/phcoder' Serbinenko]

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On 15.02.2014 21:13, Juan David Alejandro Cadena Cedano wrote:
> Hi!
> 
> 
> I want to enable usb serial ... as it appears on the page:
> http://www.coreboot.org/GRUB2, but the terminal_output command print it:
> 
> 
> "Active output Terminals:
> 
> vga_text
> 
> Available output terminals:
> 
> gfxterm spkmodem serial_ * mda_text cbmemc serial audio"
> 
>  
> 
> then ls command print it:
> 
> "(usb0) (memdisk)"
> 
ls prints disks, not serials
>  
> 
> but when I write "serial --speed=115200 --word=8 --parity=no --stop=1
> usb0" this print it:
> 
> "serial port 'usb0' is not found"
> 
what kind of dongle do you use? GRUB supports only very limited number
of dongles currently.
But I fail to understand your problem. It seems like you want to load
kernel and already have a console. Why not jsut type:
root=usb0
linux /mykernel arguments
initrd /myinitrd
boot
?



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