Black screen on boot/installation Zorin OS 15.1

colorpurple21859 · 01-15-2020, 01:28 PM

what is output of

Code:

lspci -vnn | grep '\''[030[02]\]'
cat /sys/kernel/debug/vgaswitcheroo/switch

Quote:

I don't know if there's any point in that.

I want to see what drivers are loaded at start of X

Shualik · 01-16-2020, 06:13 PM

Here you go:

And the output is

Code:

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Redwood XT [Radeon HD 5670/5690/5730] [1002:68d8] (prog-if 00 [VGA controller])

For

Code:

cat /sys/kernel/debug/vgaswitcheroo/switch

I've got 'permission denied'.

BTW, I don't know if it's important, since I made this thread I switched from Zorin to Ubuntu 18.04. The boot problem still remains.

hazel · 01-17-2020, 06:32 AM

There's something odd about that log. Usually when the keyboard and mouse have been configured, that's it until X shuts down. But this log continues with another set of video messages. It looks almost as if the graphics card has been reinitialised. Now why would that happen, I wonder?

I looked again and there are two monitor outputs.

Code:

[ 52127.221] (II) RADEON(0): EDID for output DVI-0
[ 52127.221] (II) RADEON(0): Manufacturer: SAM  Model: 27f  Serial#: 1296380466
..............
[ 52127.222] (II) RADEON(0): Monitor name: SyncMaster
[ 52127.222] (II) RADEON(0): Serial No: HVJPC05521
......

and then at the end:

Code:

[ 52201.893] (II) RADEON(0): EDID vendor "SAM", prod id 639
[ 52201.893] (II) RADEON(0): Using EDID range info for horizontal sync
[ 52201.893] (II) RADEON(0): Using EDID range info for vertical refresh

Which is the one that isn't giving a signal?

colorpurple21859 · 01-17-2020, 06:59 AM

I don't think this will show anything, but just in case, the output of

Code:

sudo cat /sys/kernel/debug/vgaswitcheroo/switch

Shualik · 01-18-2020, 03:37 AM

Quote:

Which is the one that isn't giving a signal?

There is only one. SyncMaster.

Code:

sudo cat /sys/kernel/debug/vgaswitcheroo/switch

Code:

cat: /sys/kernel/debug/vgaswitcheroo/switch: No such file or directory

colorpurple21859 · 01-18-2020, 10:19 AM

When you get a black screen press alt-ctrl-f1, do you get a console login screen?

Shualik · 01-18-2020, 06:44 PM

Quote:

Originally Posted by colorpurple21859

When you get a black screen press alt-ctrl-f1, do you get a console login screen?

No. The keyboard is dead as well.

colorpurple21859 · 01-18-2020, 08:04 PM

open a terminal post the output of

Code:

xrandr

colorpurple21859 · 01-18-2020, 08:11 PM

when you get a black screen does ctrl-alt-f1 ctrl-atl-delete reboot the computer, may take 20-30 seconds to reboot.

Shualik · 01-24-2020, 06:14 PM

Quote:

Originally Posted by colorpurple21859

open a terminal post the output of

Code:

xrandr

Code:

Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 8192 x 8192
XWAYLAND0 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 470mm x 300mm
   1680x1050     59.85*+

Quote:

when you get a black screen does ctrl-alt-f1 ctrl-atl-delete reboot the computer, may take 20-30 seconds to reboot.

No, it doesn't.

Shualik · 06-16-2020, 06:36 AM

I'm not sure it would be of any help to anybody but I'll post it here anyway. It seems that the problem had nothing to do with software. One day i just put the graphic card in another slot on motherboard and it solved this thing. Anyway, thanks guys for your time.

colorpurple21859 · 06-16-2020, 08:52 AM

Thanks for the update