NetBSD Modular xorg / Raspberry pi zero W / requirements for settings.

MG_

I just installed a working NetBSD 10.99.2 with the modular xorg package.
We have a working xinit, openbox and xterm, but I like to change the xterm font size and. Xorg display brightness and scaling Xterm refuses to view larger fonts, so I can't read anything and have to de everything on the 80x25 screens. Also, xrandr says "Failed to get size of gamma for output default" and is unable to change any display setting. What do I still need? Xorg shows no errors on stdout.

My /etc/X11/xorg.conf:

`Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
ModulePath "/usr/X11R7/lib/modules"
FontPath "/usr/X11R7/lib/X11/fonts/misc/"
FontPath "/usr/X11R7/lib/X11/fonts/TTF/"
FontPath "/usr/X11R7/lib/X11/fonts/Type1/"
FontPath "/usr/X11R7/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R7/lib/X11/fonts/100dpi/"
EndSection

Section "Module"
Load "dri"
Load "dri2"
Load "glx"
Load "shadow"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "wsmouse"
Option "Device" "/dev/wsmouse"
Option "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Device"
Identifier "Card0"
Driver "wsfb"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15 SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection`

2nd question: I'm using pico on this system because nano doesn't listen to the arrow keys at all. No problem though, but is there any way to do the scrolling per line? This jumping of 10 lines or so is a disaster...

rvp

MG_ but I like to change the xterm font size

Ctrl+Right_Mouse_Button will get there. You can also use some of the standard X options -g 100x30 (geometry) and -fn 9x15 or -fn 10x20 (font size). Look in the fonts.alias files in /usr/pkg (esp. misc/fonts.alias) for aliases for other larger fonts.

MG_ xrandr says "Failed to get size of gamma for output default"

According to this page, X11 does not use the GPU and there's not DRMKMS support, so you may be running on a simple framebuffer--which won't support XRandR.

MG_

rvp Too bad. I'm using this for various public text-displays with SDL and the scfb graphics driver, so the syscons/wscons pixel framebuffer used as primary X display driver? FreeBSD and NetBSD have the same problem but NetBSD has wifi and boots faster.
I can kind of work around it by adjusting the RGB color values in SDL programs but it takes some code and any other programs stay bright. (Having a eye-problem, so I need a dark screen all the time)

rvp

MG_ so the syscons/wscons pixel framebuffer used as primary X display driver?

Your X display driver is wsfb:

Section "Device"
    Identifier "Card0"
    Driver "wsfb"
EndSection

wsfb runs on top of the OS-provided framebuffer abstraction genfb (x86_64), or simplefb? (evbarm), or one of the DRM framebuffers intelfb, radeonfb?, ...

MG_ I can kind of work around it by adjusting the RGB color values in SDL programs but it takes some code and any other programs stay bright.

Dumb framebuffer drivers like wsfb/scfb, support neither the RandR (for xrandr) nor the VidMode (for xgamma) extensions, so you'll have to change the "brightness" in software.

See if any sysctl knobs do the trick. I believe they work on some ARM machines:

sysctl -a | fgrep bright

MG_

rvp Can't find anything related. Now trying to understand the source of xf86-video-wsfb. Only 2000 lines but it's very complicated. I can't recognize what looks like a array/bitmap/malloc thing with color values.
Also no main() function, it's a "extension" of the X11 system implementation.

rvp

MG_ Can't find anything related.

Hmm. Not even backlight? I'm almost certain that someone on this very board mentioned a sysctl knob on ARM...

MG_ I can't recognize what looks like a array/bitmap/malloc thing with color values.

It's an mmap. See wsfb_mmap() in WsfbScreenInit(), but, I don't think looking into the wsfb implementation will help you a lot. Try looking at the X API functions: XInstallColormap(), XCreateColormap() and friends, instead.

On x86, the genfb driver provides a WSDISPLAYIO_PUTCMAP ioctl, but this only works for BPP == 8 (bits). See: wsdisplay. Not sure about the FB driver on ARM.

MG_ Also no main() function, it's a "extension" of the X11 system implementation.

Yes. wsfb is a dynamically loaded display-driver module. See it being loaded in the Xorg.0.log file.