Re: GOP and using monitor

[Riza Dindir <riza.dindir%gmail.com@localhost>]

Hello Jonathan,

There looks like genfb0 is on pci0 and genfb1 is on pci1. As seen in
the dmesg output.

[     1.017264] genfb0 at pci0 dev 1 function 0: vendor 1002 product
1309 (rev. 0x00)
[     1.017264] genfb0: framebuffer at 0xe0000000, size 1366x768,
depth 32, stride 5632
[     1.017264] genfb0: shadow framebuffer enabled, size 4224 KB
[     1.017264] wsdisplay0 at genfb0 kbdmux 1: console (default, vt100
emulation), using wskbd0
[     1.017264] drm at genfb0 not configured
[     1.017264] genfb1 at pci1 dev 0 function 0: vendor 1002 product
6604 (rev. 0x00)

Only genfb0 was assigned a framebuffer area. I think this is done via
the gop command in the boot.cfg file. Isn't it possible to put aside a
framebuffer to the genfb1 also?

Riza

On Fri, Oct 1, 2021 at 2:06 PM Jonathan A. Kollasch
<jakllsch%kollasch.net@localhost> wrote:
>
> On Fri, Oct 01, 2021 at 09:22:39AM +0300, Riza Dindir wrote:
> > Hello All,
> >
> > I have NetBSD 9.2 and have disabled radeon on my machine. I am also using
> > gop, set in the boot.cfg file.
> >
> > I wanted to reduce the brigntness of my laptops monitor. But i could not do
> > it with with sysctl.
> >
> > I have an LCD monitor that i can connect via vga port. Can i use this
> > monitor as the only monitor? Do not need to use the laptop monitor. This
> > way i can reduce the brightness on the monitor.
> >
> > Regards
> > Riza
>
> Without a full video driver, you will likely not have control of which
> video output is used, or have control of the brightness of the internal
> LCD.