Error report on FreeBSD-14.2-BETA2 - graphics problem

Hi!

On a Lenovo Thinkpad T470 (with an Intel Core i7-6600U CPU plus an Intel 
GPU), I have this problem:

I cannot switch into character based virtual terminals from
the X11 graphical screen. When I press Alt-Ctrl-F[1-7] the
machine "freeze" - it doesn't do anything, mouse / keyboard
doesn't work after it. I can only halt the machine with
the power button.

It worked under 14.1 - on all of the patch levels.

$ pciconf -lv
vgapci0@pci0:0:2:0:     class=0x030000 rev=0x07 hdr=0x00 vendor=0x8086 
device=0x1916 subvendor=0x17aa subdevice=0x2245
     vendor     = 'Intel Corporation'
     device     = 'Skylake GT2 [HD Graphics 520]'
     class      = display
     subclass   = VGA


$ pkg info -x drm
drm-61-kmod-6.1.92
drm-kmod-20220907_3
libdrm-2.4.123,1

Some strange lines from dmesg:

...
drm] Got Intel graphics stolen memory base 0x7a800000, size 0x2000000
drmn0: <drmn> on vgapci0
vgapci0: child drmn0 requested pci_enable_io
vgapci0: child drmn0 requested pci_enable_io
skl_dmc_ver1_27.bin: could not load binary firmware 
/boot/firmware/skl_dmc_ver1_27.bin either
i915/skl_dmc_ver1_27.bin: could not load binary firmware 
/boot/firmware/i915/skl_dmc_ver1_27.bin either
i915_skl_dmc_ver1_27.bin: could not load binary firmware 
/boot/firmware/i915_skl_dmc_ver1_27.bin either
drmn0: successfully loaded firmware image 'i915/skl_dmc_ver1_27.bin'
drmn0: [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin 
(v1.27)
...
iic2: <I2C generic I/O> on iicbus2
drmn0: [drm] [ENCODER:102:DDI B/PHY B] is disabled/in DSI mode with an 
ungated DDI clock, gate it
drmn0: [drm] [ENCODER:117:DDI C/PHY C] is disabled/in DSI mode with an 
ungated DDI clock, gate it
sysctl_warn_reuse: can't re-use a leaf (hw.dri.debug)!
...
ic5: <I2C generic I/O> on iicbus5
[drm] Initialized i915 1.6.0 20201103 for drmn0 on minor 0
VT: Driver priority 0 too low. Current 101
  fbd0: not attached to vt(4) console; another device has precedence 
(err=17)
acpi_ibm0: <ThinkPad ACPI Extras> on acpi0
acpi_ibm0: Firmware version is 0x200
acpi_video0: <ACPI video extension> on vgapci0
...
Security policy loaded: MAC/ntpd (mac_ntpd)
drmn0: [drm] *ERROR* Fault errors on pipe A: 0x00000080
drmn0: [drm] *ERROR* Fault errors on pipe A: 0x00000080
hdac0: Command 0x20220011 timeout on address 2
hdac0: Command 0x20270d01 timeout on address 2
hdac0: Command 0x20270620 timeout on address 2
...

Bye,

ZAHEMSZKY, Gabor