From: chris@chrisfroeschl.de
To: 9front@9front.org
Subject: [9front] aux/vga display mirroring
Date: Tue, 14 Jun 2022 22:01:15 +0200 [thread overview]
Message-ID: <EFDAE50DF2AF450435377A0445372607@chrisfroeschl.de> (raw)
Good evening all,
I'm trying to setup a beamer (DH976) connected through vga with my
Thinkpad x200 for a presentation.
The beamer seems to show up. Although under vesa.
; @{rfork n; aux/realemu; aux/vga -t vesa -p}
vesa flag Ulinear|Hlinear|Fsnarf
vesa sig VESA 3.0
vesa oem Intel(R)Cantiga Graphics Chipset Accelerated VGA BIOS 1.0
vesa vendor Intel Corporation
vesa product Intel(R)Cantiga Graphics Controller
vesa rev Hardware Version 0.0
vesa cap 8-bit-dac
vesa mem 33488896
vesa dsp con 1 4
vesa dsp act
vesa mode 0x160 768x480x8 m8 packed
vesa mode 0x161 768x480x16 r5g6b5 direct
vesa mode 0x162 768x480x32 x8r8g8b8 direct
vesa mode 0x163 960x600x8 m8 packed
vesa mode 0x164 960x600x16 r5g6b5 direct
vesa mode 0x165 960x600x32 x8r8g8b8 direct
vesa mode 0x166 1280x800x8 m8 packed
vesa mode 0x167 1280x800x16 r5g6b5 direct
vesa mode 0x168 1280x800x32 x8r8g8b8 direct
vesa mode 0x105 1024x768x8 m8 packed
vesa mode 0x117 1024x768x16 r5g6b5 direct
vesa mode 0x118 1024x768x32 x8r8g8b8 direct
vesa mode 0x112 640x480x32 x8r8g8b8 direct
vesa mode 0x114 800x600x16 r5g6b5 direct
vesa mode 0x115 800x600x32 x8r8g8b8 direct
vesa mode 0x101 640x480x8 m8 packed
vesa mode 0x103 800x600x8 m8 packed
vesa mode 0x111 640x480x16 r5g6b5 direct
edid mfr DPC
edid serialstr
edid name DH976
edid product 34409
edid serial 0
edid version 1.3
edid mfrdate 2015.1
edid size (cm) 0x0
edid gamma 2.20
edid vert (Hz) 48-120
edid horz (Hz) 31000-102000
edid pclkmax 170000000
edid flags
edid 1920x1080@60Hz
clock=148.5
shb=2008 ehb=2052 ht=2200
vrs=1084 vre=1089 vt=1125
hsync=+ vsync=+
edid 1920x1200@60Hz
clock=154
shb=1968 ehb=2000 ht=2080
vrs=1203 vre=1209 vt=1235
hsync=+ vsync=-
edid 640x480@60Hz
clock=25.175
shb=656 ehb=752 ht=800
vrs=490 vre=492 vt=525
hsync=- vsync=-
edid 640x480@73Hz
clock=31.5
shb=664 ehb=704 ht=832
vrs=489 vre=492 vt=520
hsync=- vsync=-
edid 640x480@75Hz
clock=31.5
shb=656 ehb=720 ht=840
vrs=481 vre=484 vt=500
hsync=- vsync=-
edid 800x600@60Hz
clock=40
shb=840 ehb=968 ht=1056
vrs=601 vre=605 vt=628
hsync=+ vsync=+
edid 800x600@72Hz
clock=50
shb=856 ehb=976 ht=1040
vrs=637 vre=643 vt=666
hsync=+ vsync=+
edid 800x600@75Hz
clock=49.5
shb=816 ehb=896 ht=1056
vrs=601 vre=604 vt=625
hsync=+ vsync=+
edid 1024x768@60Hz
clock=65
shb=1048 ehb=1184 ht=1344
vrs=771 vre=777 vt=806
hsync=- vsync=-
edid 1024x768@70Hz
clock=75
shb=1048 ehb=1184 ht=1328
vrs=771 vre=777 vt=806
hsync=- vsync=-
edid 1024x768@75Hz
clock=78.75
shb=1040 ehb=1136 ht=1312
vrs=769 vre=772 vt=800
hsync=+ vsync=+
edid 1280x1024@75Hz
clock=135
shb=1296 ehb=1440 ht=1688
vrs=1025 vre=1028 vt=1066
hsync=+ vsync=+
I ended up switching from my laptop display to the beamer one like so:
@{rfork n; aux/realemu; aux/vga -m vesa -l '1280x800x32,#1'}
And back like so:
@{rfork n; aux/realemu; aux/vga -m vga -l '1280x800x32,#1'}
or: (there doesn't seem to be a difference between those in this case)
@{rfork n; aux/realemu; aux/vga -m igfx -l '1280x800x32,#1'}
From my understanding, it should be the other way around. Just a
understand problem on my side perhaps. Nothing that bothers me since
I know that it works at least. Although an explanation could
be helpful.
There also seems to be some caching like logic to be involved. I have
to include the display number '#1' at least at the first call. Afterwards
it doesn't need to be included.
Anyways, I get to the switch leaving me with a blank screen. Is there
a way to do a screen mirroring? (Laptop screen synced with beamer
screen)
I imagine this to be not too trivial if even possible. But I was hoping
for someone who perhaps already tried.
next reply other threads:[~2022-06-14 20:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-14 20:01 chris [this message]
2022-06-15 6:56 ` qwx
2022-06-15 20:36 ` chris
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