Suspend/resume experiment with FreeBSD 11.2 resuming without graphics

[Rajesh]

Hi,

I tried suspend/resume testing in my amd64 board. I just ran "acpiconf -s 3" from second terminal. Suspend was happening properly. But when I resume, system resumes but I don't see anything on my monitor. I could able to connect to the system using SSH, but just that I don't see anything on the monitor?

I am not sure if it has something to do with the graphics here. Can anyone help out?

 

[julp]

Hi,

which graphics (amd/nvidia/intel) do you use? What's your current value for sysctl kern.vty?

I had the same problem with a(n old) nvidia gpu and had to switch from vt to syscons ( echo 'kern.vty=sc' >> /boot/loader.conf).

 

[Rajesh]

Graphics is "AMD Radeon Raven Ridge Vega series", please see the pciconf output.

vgapci0@pci0:1:0:0: class=0x030000 card=0x15dd1002 chip=0x15dd1002 rev=0x81 hdr=0x00
vendor = 'Advanced Micro Devices, Inc. [AMD/ATI]'
device = 'Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series]'
class = display
subclass = VGA

By default, kern.vty is set to "vt". When this is the case, first time boot gives the console output, but in resume i don't see the console output. But, when I change the kern.vty to "sc" in loader.conf, I don't see the console output in the first time boot itself.

With kern.vty set to "vt", I tried setting hw.vga.textmode=1 in loader.conf and kld_list="radeonkms" in /etc/rc.conf, but still resume gives no console output.

Is there anything else I can try?

 

[Rajesh]

Another point to add here,

The "vesa" module seems to be not loaded properly (during the first time boot, or during the resume). I see the following message when trying to load the "vesa" module explicitly.

module_register_init: MOD_LOAD (vesa, 0xffffffff82a3e000, 0) error 19
sysctl_unregister_oid: failed to unregister sysctl

Could this be related to the issue?