Re: [Xen-devel] Blank screen while booting xen

[Harmandeep Kaur <write.harmandeep@xxxxxxxxx>]

On Mon, Jan 11, 2016 at 11:00 PM, Konrad Rzeszutek Wilk
<konrad.wilk@xxxxxxxxxx> wrote:
> On Mon, Jan 11, 2016 at 10:56:07PM +0530, Harmandeep Kaur wrote:
>> On Mon, Jan 11, 2016 at 8:23 PM, Konrad Rzeszutek Wilk
>> <konrad.wilk@xxxxxxxxxx> wrote:
>> > On Mon, Jan 11, 2016 at 12:57:27AM +0530, Harmandeep Kaur wrote:
>> >> Hi,
>> >>
>> >> I tried to modify and compile some of Xen 4.7's code
>> >> (cloned from git clone git://xenbits.xen.org/xen.git)
>> >> and even with a very minor change (patch included at last)
>> >> my xen failed to boot. It stucks at black blank screen after
>> >> showing some xen logs.
>> >
>> > What is on your Linux command line? Do you have 'console=hvc0' ?
>> my /etc/defaults/grub   http://paste2.org/BkOOOskh
>> my /boot/grub/grub.cfg http://paste2.org/Ks49MZEh
>> >
>> >>
>> >> By adding "vga=text-80x80,keep" to the grub before booting
>> >> xen., infinite loop of text
>> >> "(XEN) traps.c:3290: GPF (0000): ffff82d0801af4d5 -> ffff82d080240e5a"
>> >> appears.
>> >>
>> >> I tried to compile and boot xen reverting the change, but
>> >> same issue still exists.
>> >>
>> >> Also I tried to setup serial console but my output is garbled.
>> >> More info on it here,
>> >> http://lists.xenproject.org/archives/html/xen-devel/2015-12/msg02045.html
>> >>
>> >> I tried different software (cu, gtkterm), different baud rates,
>> >> different serial-USB cable and stopping modemmanager,
>> >> but no luck.
>> >
>> > How did you set the baudrate? I usually do 'screen /dev/ttyUSB0 115200 cs8'
>> > ?
>>
>> I also tried the same with screen just without the cs8 keyword.
>>
>> >>
>> >> I am using i3-6100 processor, if that info is needed.I will
>> >> appreciate any help.
>> >
>> > dmesg | grep tty
>>
>> $ dmesg | grep tty
>> [       0.000000] console [tty0] enabled
>> [       4.537790] systemd[1]: Created slice system-getty.slice.
>> [11542.458553] usb 1-4: pl2303 converter now attache
>
>
> This is on your box with the USB dongle. I meant the other one.
>
here it is
$ dmesg | grep tty
[    0.000000] console [tty0] enabled
[    0.786850] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200)
is a 16550A

> Maybe we should step back a bit. On the machine on which you
> want to install Xen - does it work if you install say
> Fedora Core 23 and after installing, you do 'yum install xen' ?
> Can you boot with that? Then at least we will know whether an
> packaged version of Xen works on your machine.

Yes, it works. I tried that with xen 4.5 on Ubuntu 15.10.
Also, even my compiled version(4.7) used to run before
my modification.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel