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serial console

parisc-linux Mike Shaver 3 participants 3 messages Jul 10, 1999 – Jul 13, 1999

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Mike Shaver

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I have a serial console cable that came with my A180C, but I can't get the silly box to talk to it.

I've tried with another known-good cable (it works with my Indy), and still nothing. What do I need to do to activate it? I tried unplugging the web console from the network, and rebooting with the serial cable connected and minicom running, but still no joy.

Also, is there an equivalent to Sun's L1-A or the Indy's send-break-over-serial that will get me back to the PROM in the event that Linux jumps to east nowhere? Or do I have to power cycle?

Mike

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Quoted 2 lines · Mike Shaver

I have a serial console cable that came with my A180C, but I can't get the silly box to talk to it.

disconnect the web console port. Whenever I have the web console port connected to the hub, the serial console doesn't work for. As soon as I unplug the web console the serial console comes up immidiatly. I haven't notice this behaviour until I got enough cables today:-)

Quoted 3 lines

Also, is there an equivalent to Sun's L1-A or the Indy's send-break-over-serial that will get me back to the PROM in the event that Linux jumps to east nowhere? Or do I have to power cycle?

So far everbody denied the existance of that essentiell (at least for kernel hackers) feature.

Thomas.

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   This device has completely bogus header. Compaq scores again :-|
It's a host bridge, but it should be called ghost bridge instead ;^)
                                        [Martin `MJ' Mares on linux-kernel]
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Quoted 6 lines · On Mon, 12 Jul 1999 23:10:19 +0200 Thomas Bogendoerfer wrote:
Quoted 3 lines

Also, is there an equivalent to Sun's L1-A or the Indy's send-break-over-serial that will get me back to the PROM in the event that Linux jumps to east nowhere? Or do I have to power cycle?

So far everbody denied the existance of that essentiell (at least for kernel hackers) feature.

Historically on HP servers (series 800 machines) ^B gets you to "PROM" mode. It has varied on different machines whether this is enabled and disabled by a key, or a switch on the back, or is not able to be disabled at all.

Some newer machines (some D series, all A series, all R series) don't have this functionality out unless an "access port" card is added to the system. These systems do still have a TOC (Transfer of Control) button so that dumps can be taken.

I'll dig out the part number for the access port card if anyone cares; I don't have it to hand right now.

Regards,

Giles