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xen-devel
Re: [Xen-devel] Cannot load latest 2.6.32.10 kernel on AMD quad-core
On Sun, Apr 25, 2010 at 02:53:08AM -0400, Gerry Reno wrote:
> Gerry Reno wrote:
>> Boris Derzhavets wrote:
>>> There is serial (cable) via RJ45 ( Ethernet). Of course, if it's
>>> not your expense.
>>>
>>> Boris.
>>>
>> Found a USB-USB null modem cable at usbgear.com but will kernel
>> support this for serial console?
>>
>> -Gerry
> Ok, without a serial port on this machine the best I can do is use a
> USB-Serial convertor which I realize will not provide BIOS or GRUB
> messages. To start with I changed the kernel boot line adding:
> console=ttyUSB0,115200n8 and I setup minicom on the other machine. At
> first minicom would only give me unreadable characters so I assumed a
> baud mismatch and began testing other rates. At 57600n8 in minicom I
> get this:
> AT+GCAP
> AT+GCAP
> AT+GCAP
>
> this is with both the standard lucid kernel and the pv_ops dom0 kernel
> using console=ttyUSB0,115200n8. Any ideas on how to get more output?
> And I don't know how to configure xen line to add console or if usb
> serial console is even possible with xen.
>
http://wiki.xensource.com/xenwiki/XenSerialConsole
USB serial is not possible as a serial console for Xen hypervisor.
USB drivers are in dom0 linux kernel, so Xen boot messages cannot be sent to
USB serial since linux is loaded only after Xen hypervisor.
-- Pasi
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