Re: ruby 2.6.0 oops+crash when accessing /dev/tty18

[Helge H. <hel...@ai...>]

Aivils Stoss wrote:
>>>>This is what I have:
>>>>Console: Colour VGA+ 80x25 vc:1-16
>>>>Console: mono dummy device 80x25 vc:17-17
>>>
>>>
>>>You must have more. fbcon initializing add some lines, actualy
>>>"take over" , when takes over VGA console, take_over_console() vt.c
>>>Secondary matrox_crt2 should come in dmesg to, fbcon_add() fbcon.c.
>>>
>>>According Your dmesg, fbcon was not initialized.
[...]
Attached:
dmesg-ruby260fbc1 which is dmesg for ruby 2.6.0 with matroxfb fbcon and dumbcon=1
dmesg-ruby260fbc2-smart which is dmesg for the same kernel without dumbcon.  I hoped
the second fbdev would get some vc's, seems it didn't happen.

As you see, I get a vc17 with dumbcon.  Trying to run an xserver on it
fails though. See the attached psaux-ruby260fbc1-xDstate,
which shows a stuck X server. The command 
(/usr/X11R6/bin/X :1 vt17   -xf86config xf86) works when using 
2.6.0-test11 and cvs ruby from november 30. 2003.

> Can You send to me /var/log/dmesg and System.map files.
> Looks like matroxfb_crtc2 lacks in Your kernel.
> 
Isn't that this line? 
matroxfb_crtc2: secondary head of fb0 was registered as fb1

It doesn't seem to get any vc, not even when I drop the dumbcon.
Trying to use X on vt17 when I don't have dumbcon hangs the
machine immediately - not even sysrq caused any reaction so I
had to use the reset button. Something is wrong when this happen.
The vc should ideally work - or give me an ENODEV or similiar.

All drivers are compiled into the kernel.



[...]
>>Another unrelated problem:
[...]
> Startting order depends from keyboard model.
> I use simple lines for my two PS/2 keyboards
> 
> echo "isa0060/serio0/input0" > /proc/bus/console/00/keyboard
> echo "isa0060/serio1/input0" > /proc/bus/console/01/keyboard
> 
Thanks, this works.  I thought the /proc files were informational only,
it didn't occur to me that they were writeable.

> You should put right keyboard physicaly description into
> right /proc/bus/console/XX/keyboard file.
> 
> Before write this in Your system startup script , please read
> /proc/bus/input/devices

I: Bus=0011 Vendor=0001 Product=0002 Version=ab83
N: Name="AT Raw Set 2 keyboard"
P: Phys=isa0060/serio1/input0
H: Handlers=kbd event0 
B: EV=120003 
B: KEY=4 2200000 c061f9 fbc9d621 efdfffdf ffefffff ffffffff fffffffe 
B: LED=7 

I: Bus=0011 Vendor=0001 Product=0002 Version=ab02
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
H: Handlers=kbd event1 
B: EV=120003 
B: KEY=4 2200000 c061f9 fbc9d621 efdfffdf ffefffff ffffffff fffffffe 
B: LED=7 


Helge Hafting