Re: vaapi HEVC support

Intel Skylake GPUs support HEVC Main Profile decoding, but they do not
fully support all Main 10 or advanced profiles such as Main 4:2:2 or
10-bit HDR variants.

On Thu Jan 09, 2025 at 07:12:25AM +0100, Jan Stary wrote:
> This is current/amd64 (dmesg below).
> The graphics (Skylake) supports HEVC decoding
>
> $ vainfo
> Trying display: x11
> libva info: VA-API version 1.22.0
> libva info: Trying to open /usr/X11R6/lib/modules/dri/iHD_drv_video.so
> libva info: Trying to open /usr/local/lib/dri/iHD_drv_video.so
> libva info: Found init function __vaDriverInit_1_22
> libva info: va_openDriver() returns 0
> vainfo: VA-API version: 1.22 (libva 2.22.0)
> vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 24.2.5 (OpenBSD)
> vainfo: Supported profile and entrypoints
> VAProfileNone : VAEntrypointVideoProc
> VAProfileNone : VAEntrypointStats
> VAProfileMPEG2Simple : VAEntrypointVLD
> VAProfileMPEG2Simple : VAEntrypointEncSlice
> VAProfileMPEG2Main : VAEntrypointVLD
> VAProfileMPEG2Main : VAEntrypointEncSlice
> VAProfileH264Main : VAEntrypointVLD
> VAProfileH264Main : VAEntrypointEncSlice
> VAProfileH264Main : VAEntrypointFEI
> VAProfileH264Main : VAEntrypointEncSliceLP
> VAProfileH264High : VAEntrypointVLD
> VAProfileH264High : VAEntrypointEncSlice
> VAProfileH264High : VAEntrypointFEI
> VAProfileH264High : VAEntrypointEncSliceLP
> VAProfileVC1Simple : VAEntrypointVLD
> VAProfileVC1Main : VAEntrypointVLD
> VAProfileVC1Advanced : VAEntrypointVLD
> VAProfileJPEGBaseline : VAEntrypointVLD
> VAProfileJPEGBaseline : VAEntrypointEncPicture
> VAProfileH264ConstrainedBaseline: VAEntrypointVLD
> VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
> VAProfileH264ConstrainedBaseline: VAEntrypointFEI
> VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
> VAProfileVP8Version0_3 : VAEntrypointVLD
> VAProfileVP8Version0_3 : VAEntrypointEncSlice
> VAProfileHEVCMain : VAEntrypointVLD
> VAProfileHEVCMain : VAEntrypointEncSlice
> VAProfileHEVCMain : VAEntrypointFEI
>
> I am testing with the following file:
>
> hans@bzm:~$ ffprobe london.mp4
> ffprobe version 6.1.2 Copyright (c) 2007-2024 the FFmpeg developers
> built with OpenBSD clang version 16.0.6
> configuration: --enable-shared --arch=amd64 --cc=cc --cxx=c++ --enable-debug --disable-stripping --disable-indev=jack --disable-outdev=sdl2 --disable-vulkan --enable-fontconfig --enable-frei0r --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libdav1d --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-libopus --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-nonfree --enable-openssl --enable-libvidstab --extra-cflags='-I/usr/local/include -I/usr/X11R6/include' --extra-libs='-L/usr/local/lib -L/usr/X11R6/lib' --extra-ldsoflags= --mandir=/usr/local/man --objcc=/usr/bin/false --optflags='-O2 -pipe -g -Wno-redundant-decls'
> libavutil 58. 29.100 / 58. 29.100
> libavcodec 60. 31.102 / 60. 31.102
> libavformat 60. 16.100 / 60. 16.100
> libavdevice 60. 3.100 / 60. 3.100
> libavfilter 9. 12.100 / 9. 12.100
> libswscale 7. 5.100 / 7. 5.100
> libswresample 4. 12.100 / 4. 12.100
> libpostproc 57. 3.100 / 57. 3.100
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'london.mp4':
> Metadata:
> major_brand : isom
> minor_version : 1
> compatible_brands: isom
> creation_time : 2016-09-06T12:19:58.000000Z
> Duration: 00:59:58.84, start: 0.000000, bitrate: 2903 kb/s
> Stream #0:0[0x1](und): Video: hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(tv), 1920x1080, 2771 kb/s, 25 fps, 25 tbr, 25k tbn (default)
> Metadata:
> creation_time : 2016-09-06T11:53:57.000000Z
> handler_name : hevc@GPAC0.6.1-rev0-g72d766c-master
> vendor_id : [0][0][0][0]
> Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
> Metadata:
> creation_time : 2016-09-06T11:00:53.000000Z
> handler_name : English
> vendor_id : [0][0][0][0]
> Stream #0:2[0x3](eng): Subtitle: mov_text (tx3g / 0x67337874), 1920x1080, 0 kb/s
> Metadata:
> creation_time : 2016-09-06T12:20:40.000000Z
> handler_name : English
>
>
> I am not entirely sure what "hevc (Main 10) (hvc1 / 0x31637668)" is,
> but e.g. mpv says "hevc: No support for codec hevc profile 2."
>
> $ mpv london.mp4
> 0m (+) Video --vid=1 (*) (hevc 1920x1080 25.000fps)
> 0m0m (+) Audio --aid=1 --alang=eng (*) (aac 2ch 48000Hz)
> 0m0m (+) Subs --sid=1 --slang=eng (mov_text)
> 0m0;31m[ffmpeg/video] hevc: No support for codec hevc profile 2.
> 0m0;31m[ffmpeg/video] hevc: No support for codec hevc profile 2.
> 0m0;31m[ffmpeg/video] hevc: Failed setup for format vaapi: hwaccel initialisation returned error.
> 0m0mAO: [sndio] 48000Hz stereo 2ch s16
> 0m0mVO: [gpu] 1920x1080 yuv420p10
> 0mAV:l00:00:01:/000:59:58:(0%)8A-V:)-0.0020m?25h0m1K
> 0mExiting... (Quit)
>
> Can someone more video-savy please explain what exactly it is
> that my Skylake (or the vaapi support of it) is missing?
>
> Reading
> https://en.wikipedia.org/wiki/High_Efficiency_Video_Coding_tiers_and_levels
> I suppose I have support for the HEVC Main tier, not the High tier.
> But what is the "profile 2" mpv complains about?
>
> While here, is there a way to tell if ffplay is using hardware decoding?
> Possibly not on this file, but in general: mpv says so if it does.
>
> $ ffplay london.mp4
> ffplay version 6.1.2 Copyright (c) 2003-2024 the FFmpeg developers
> built with OpenBSD clang version 16.0.6
> configuration: --enable-shared --arch=amd64 --cc=cc --cxx=c++ --enable-debug --disable-stripping --disable-indev=jack --disable-outdev=sdl2 --disable-vulkan --enable-fontconfig --enable-frei0r --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libdav1d --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-libopus --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-nonfree --enable-openssl --enable-libvidstab --extra-cflags='-I/usr/local/include -I/usr/X11R6/include' --extra-libs='-L/usr/local/lib -L/usr/X11R6/lib' --extra-ldsoflags= --mandir=/usr/local/man --objcc=/usr/bin/false --optflags='-O2 -pipe -g -Wno-redundant-decls'
> libavutil 58. 29.100 / 58. 29.100
> libavcodec 60. 31.102 / 60. 31.102
> libavformat 60. 16.100 / 60. 16.100
> libavdevice 60. 3.100 / 60. 3.100
> libavfilter 9. 12.100 / 9. 12.100
> libswscale 7. 5.100 / 7. 5.100
> libswresample 4. 12.100 / 4. 12.100
> libpostproc 57. 3.100 / 57. 3.100
> Inputa#0, mov,mp4,m4a,3gp,3g2,mj2, fromv'london.mp4': 0B f=0/0
> Metadata:
> major_brand : isom
> minor_version : 1
> compatible_brands: isom
> creation_time : 2016-09-06T12:19:58.000000Z
> Duration: 00:59:58.84, start: 0.000000, bitrate: 2903 kb/s
> Stream #0:0[0x1](und): Video: hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(tv), 1920x1080, 2771 kb/s, 25 fps, 25 tbr, 25k tbn (default)
> Metadata:
> creation_time : 2016-09-06T11:53:57.000000Z
> handler_name : hevc@GPAC0.6.1-rev0-g72d766c-master
> vendor_id : [0][0][0][0]
> Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
> Metadata:
> creation_time : 2016-09-06T11:00:53.000000Z
> handler_name : English
> vendor_id : [0][0][0][0]
> Stream #0:2[0x3](eng): Subtitle: mov_text (tx3g / 0x67337874), 1920x1080, 0 kb/s
> Metadata:
> creation_time : 2016-09-06T12:20:40.000000Z
> handler_name : English
> 2.24 A-V: -0.018 fd= 5 aq= 446KB vq=14965KB sq= 0B f=0/0
>
>
> Jan
>
>
> OpenBSD 7.6-current (GENERIC.MP) #491: Sat Dec 28 12:03:05 MST 2024
> deraadt@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> real mem = 12749877248 (12159MB)
> avail mem = 12339843072 (11768MB)
> random: good seed from bootblocks
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.8 @ 0xed1e0 (37 entries)
> bios0: vendor AMI version "02.25" date 03/10/2022
> bios0: HP Pippin2
> acpi0 at bios0: ACPI 5.0
> acpi0: sleep states S0 S3 S4 S5
> acpi0: tables DSDT FACP APIC FPDT FIDT MCFG HPET SSDT LPIT SSDT SSDT SSDT SSDT DBGP DBG2 SSDT SSDT UEFI SSDT DMAR DBGP
> acpi0: wakeup devices PEG0(S4) PEGP(S4) PEG1(S4) PEGP(S4) PEG2(S4) PEGP(S4) RP09(S4) PXSX(S4) RP10(S4) PXSX(S4) RP11(S4) PXSX(S4) RP12(S4) PXSX(S4) RP13(S4) PXSX(S4) [...]
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) Core(TM) i3-6100U CPU @ 2.30GHz, 2194.89 MHz, 06-4e-03, patch 000000f0
> cpu0: cpuid 1 edx=bfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> ecx=77fafbbf<SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND>
> cpu0: cpuid 6 eax=27f7<SENSOR,ARAT> ecx=9<EFFFREQ>
> cpu0: cpuid 7.0 ebx=29c6fbf<FSGSBASE,TSC_ADJUST,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT> edx=bc002e00<SRBDS_CTRL,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD>
> cpu0: cpuid a vers=4, gp=4, gpwidth=48, ff=3, ffwidth=48
> cpu0: cpuid d.1 eax=f<XSAVEOPT,XSAVEC,XGETBV1,XSAVES>
> cpu0: cpuid 80000001 edx=2c100800<NXE,PAGE1GB,RDTSCP,LONG> ecx=121<LAHF,ABM,3DNOWP>
> cpu0: cpuid 80000007 edx=100<ITSC>
> cpu0: msr 10a=c04<RSBA,MISC_PKG_CT,ENERGY_FILT>
> cpu0: MELTDOWN
> cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB 64b/line 4-way L2 cache, 3MB 64b/line 12-way L3 cache
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
> cpu0: apic clock running at 24MHz
> cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1.1.1, IBE
> cpu1 at mainbus0: apid 2 (application processor)
> cpu1: Intel(R) Core(TM) i3-6100U CPU @ 2.30GHz, 2194.89 MHz, 06-4e-03, patch 000000f0
> cpu1: smt 0, core 1, package 0
> cpu2 at mainbus0: apid 1 (application processor)
> cpu2: Intel(R) Core(TM) i3-6100U CPU @ 2.30GHz, 2194.89 MHz, 06-4e-03, patch 000000f0
> cpu2: smt 1, core 0, package 0
> cpu3 at mainbus0: apid 3 (application processor)
> cpu3: Intel(R) Core(TM) i3-6100U CPU @ 2.30GHz, 2194.89 MHz, 06-4e-03, patch 000000f0
> cpu3: smt 1, core 1, package 0
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
> acpimcfg0 at acpi0
> acpimcfg0: addr 0xf0000000, bus 0-127
> acpihpet0 at acpi0: 23999999 Hz
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpiprt1 at acpi0: bus -1 (PEG0)
> acpiprt2 at acpi0: bus -1 (PEG1)
> acpiprt3 at acpi0: bus -1 (PEG2)
> acpiprt4 at acpi0: bus -1 (RP09)
> acpiprt5 at acpi0: bus -1 (RP10)
> acpiprt6 at acpi0: bus -1 (RP11)
> acpiprt7 at acpi0: bus -1 (RP12)
> acpiprt8 at acpi0: bus -1 (RP13)
> acpiprt9 at acpi0: bus -1 (RP01)
> acpiprt10 at acpi0: bus -1 (RP02)
> acpiprt11 at acpi0: bus 1 (RP03)
> acpiprt12 at acpi0: bus 2 (RP04)
> acpiprt13 at acpi0: bus -1 (RP05)
> acpiprt14 at acpi0: bus -1 (RP06)
> acpiprt15 at acpi0: bus -1 (RP07)
> acpiprt16 at acpi0: bus -1 (RP08)
> acpiprt17 at acpi0: bus -1 (RP17)
> acpiprt18 at acpi0: bus -1 (RP18)
> acpiprt19 at acpi0: bus -1 (RP19)
> acpiprt20 at acpi0: bus -1 (RP20)
> acpiprt21 at acpi0: bus -1 (RP14)
> acpiprt22 at acpi0: bus -1 (RP15)
> acpiprt23 at acpi0: bus -1 (RP16)
> acpiec0 at acpi0: not present
> acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
> acpicmos0 at acpi0
> acpibtn0 at acpi0: SLPB
> intelpmc0 at acpi0: PEPD
> state 0: 0x7f:1:2:0x00:0x0000000000000060
> counter: 0x7f:64:0:0x00:0x0000000000000632
> frequency: 0
> state 1: 0x7f:1:2:0x00:0x0000000000000060
> counter: 0x7f:64:0:0x00:0x0000000000000632
> frequency: 0
> acpibtn1 at acpi0: PWRB
> "PNP0C14" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> acpicpu0 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu1 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu2 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu3 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpipwrres0 at acpi0: PG00, resource for PEG0
> acpipwrres1 at acpi0: PG01, resource for PEG1
> acpipwrres2 at acpi0: PG02, resource for PEG2
> acpipwrres3 at acpi0: WRST
> acpipwrres4 at acpi0: WRST
> acpipwrres5 at acpi0: WRST
> acpipwrres6 at acpi0: WRST
> acpipwrres7 at acpi0: WRST
> acpipwrres8 at acpi0: WRST
> acpipwrres9 at acpi0: WRST
> acpipwrres10 at acpi0: WRST
> acpipwrres11 at acpi0: WRST
> acpipwrres12 at acpi0: WRST
> acpipwrres13 at acpi0: WRST
> acpipwrres14 at acpi0: WRST
> acpipwrres15 at acpi0: WRST
> acpipwrres16 at acpi0: WRST
> acpipwrres17 at acpi0: WRST
> acpipwrres18 at acpi0: WRST
> acpipwrres19 at acpi0: WRST
> acpipwrres20 at acpi0: WRST
> acpipwrres21 at acpi0: WRST
> acpipwrres22 at acpi0: WRST
> acpipwrres23 at acpi0: FN00, resource for FAN0
> acpipwrres24 at acpi0: FN01, resource for FAN1
> acpipwrres25 at acpi0: FN02, resource for FAN2
> acpipwrres26 at acpi0: FN03, resource for FAN3
> acpipwrres27 at acpi0: FN04, resource for FAN4
> acpitz0 at acpi0: critical temperature is 119 degC
> acpitz1 at acpi0: critical temperature is 119 degC
> acpivideo0 at acpi0: GFX0
> acpivout0 at acpivideo0: DD1F
> cpu0: using VERW MDS workaround (except on vmm entry)
> cpu0: Enhanced SpeedStep 2194 MHz: speeds: 2301, 2300, 2200, 2000, 1900, 1800, 1600, 1500, 1300, 1200, 1100, 900, 800, 700, 500, 400 MHz
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "Intel Core 6G Host" rev 0x08
> inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 520" rev 0x07
> drm0 at inteldrm0
> inteldrm0: msi, SKYLAKE, gen 9
> "Intel Core GMM" rev 0x00 at pci0 dev 8 function 0 not configured
> xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI" rev 0x21: msi, xHCI 1.0
> usb0 at xhci0: USB revision 3.0
> uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 addr 1
> "Intel 100 Series MEI" rev 0x21 at pci0 dev 22 function 0 not configured
> ahci0 at pci0 dev 23 function 0 "Intel 100 Series AHCI" rev 0x21: msi, AHCI 1.3.1
> ahci0: device on port 0 didn't come ready, TFD: 0x80<BSY>
> ahci0: CLO did not complete
> ahci0: port 0: 3.0Gb/s
> scsibus1 at ahci0: 32 targets
> sd0 at scsibus1 targ 0 lun 0: <ATA, INTEL SSDSA2M040, 2CV1> naa.50015179593bd675
> sd0: 38166MB, 512 bytes/sector, 78165360 sectors, thin
> ppb0 at pci0 dev 28 function 0 "Intel 100 Series PCIE" rev 0xf1: msi
> pci1 at ppb0 bus 1
> re0 at pci1 dev 0 function 0 "Realtek 8168" rev 0x10: RTL8168GU/8111GU (0x5080), msi, address 7c:d3:0a:21:eb:f5
> rgephy0 at re0 phy 7: RTL8251, rev. 0
> ppb1 at pci0 dev 28 function 3 "Intel 100 Series PCIE" rev 0xf1: msi
> pci2 at ppb1 bus 2
> "Realtek 8723BE" rev 0x00 at pci2 dev 0 function 0 not configured
> pcib0 at pci0 dev 31 function 0 "Intel 100 Series LPC" rev 0x21
> "Intel 100 Series PMC" rev 0x21 at pci0 dev 31 function 2 not configured
> azalia0 at pci0 dev 31 function 3 "Intel 100 Series HD Audio" rev 0x21: msi
> azalia0: codecs: Realtek ALC221, Intel/0x2809, using Realtek ALC221
> audio0 at azalia0
> ichiic0 at pci0 dev 31 function 4 "Intel 100 Series SMBus" rev 0x21: apic 2 int 16
> iic0 at ichiic0
> spdmem0 at iic0 addr 0x50: 8GB DDR4 SDRAM PC4-17000 SO-DIMM
> spdmem1 at iic0 addr 0x52: 4GB DDR4 SDRAM PC4-17000 SO-DIMM
> isa0 at pcib0
> isadma0 at isa0
> pckbc0 at isa0 port 0x60/5 irq 1 irq 12
> pckbd0 at pckbc0 (kbd slot)
> wskbd0 at pckbd0: console keyboard
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> vmm0 at mainbus0: VMX/EPT
> uhidev0 at uhub0 port 4 configuration 1 interface 0 "vendor 0x173d product 0x0004" rev 1.10/1.50 addr 2
> uhidev0: iclass 3/1
> ukbd0 at uhidev0: 8 variable keys, 6 key codes
> wskbd1 at ukbd0 mux 1
> uhidev1 at uhub0 port 4 configuration 1 interface 1 "vendor 0x173d product 0x0004" rev 1.10/1.50 addr 2
> uhidev1: iclass 3/0, 3 report ids
> uhid0 at uhidev1 reportid 1: input=3, output=0, feature=0
> uhid1 at uhidev1 reportid 2: input=1, output=0, feature=0
> ucc0 at uhidev1 reportid 3: 4 usages, 3 keys, array
> wskbd2 at ucc0 mux 1
> uhidev2 at uhub0 port 5 configuration 1 interface 0 "Logitech USB-PS/2 Optical Mouse" rev 2.00/11.10 addr 3
> uhidev2: iclass 3/1
> ums0 at uhidev2: 3 buttons, Z dir
> wsmouse0 at ums0 mux 0
> ugen0 at uhub0 port 6 "Realtek Bluetooth Radio" rev 2.10/2.00 addr 4
> vscsi0 at root
> scsibus2 at vscsi0: 256 targets
> softraid0 at root
> scsibus3 at softraid0: 256 targets
> root on sd0a (921cf7198fa2abbd.a) swap on sd0b dump on sd0b
> inteldrm0: 1680x1050, 32bpp
> wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
> wskbd1: connecting to wsdisplay0
> wskbd2: connecting to wsdisplay0
> wsdisplay0: screen 1-5 added (std, vt100 emulation)
>