[Bug 269606] black screen after monitor wake up

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 17 Feb 2023 00:20:10 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=269606

--- Comment #1 from Paul Dufresne <dufresnep@zoho.com> ---
Unusual message in dmesg:
vgapci0: child drmn0 requested pci_enable_io
vgapci0: child drmn0 requested pci_enable_io
[drm] Unable to create a private tmpfs mount, hugepage support will be
disabled(-19).
[drm] Got stolen memory base 0xc4000000, size 0x4000000

paul@dufresnep:/usr/home/paul $ dmesg | grep -i vga
vgapci0: <VGA-compatible display> port 0xf000-0xf03f mem
0xf6000000-0xf6ffffff,0xe0000000-0xefffffff irq 16 at device 2.0 on pci0
vgapci0: Boot video device
drmn0: <drmn> on vgapci0
vgapci0: child drmn0 requested pci_enable_io
vgapci0: child drmn0 requested pci_enable_io
paul@dufresnep:/usr/home/paul $ 

paul@dufresnep:/usr/home/paul $ dmesg | grep -i drm
drmn0: <drmn> on vgapci0
vgapci0: child drmn0 requested pci_enable_io
vgapci0: child drmn0 requested pci_enable_io
[drm] Unable to create a private tmpfs mount, hugepage support will be
disabled(-19).
[drm] Got stolen memory base 0xc4000000, size 0x4000000
lkpi_iic0: <LinuxKPI I2C> on drmn0
lkpi_iic1: <LinuxKPI I2C> on drmn0
lkpi_iic2: <LinuxKPI I2C> on drmn0
drmn0: successfully loaded firmware image 'i915/kbl_dmc_ver1_04.bin'
drmn0: [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)
lkpi_iic3: <LinuxKPI I2C> on drm2
[drm] Initialized i915 1.6.0 20200917 for drmn0 on minor 0
name=drmn0 flags=0x0 stride=5120 bpp=32
paul@dufresnep:/usr/home/paul $

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