Xorg dri2 after r277486 on Asus Zenbook

[Stefan Parvu]

Hi,

> You can try:
> * plug in an external monitor

this worked fine.

> * ssh into the machine, adjust hw.acpi.video.lcd0.brightness

this did not work. I was able to ssh and try to adjust the brightness
but it did not make any difference. I had 100 returned for
hw.acpi.video.lcd0.brightness.

What Im able to see from dmesg:

"info: [drm] MSI enabled 1 message(s)
info: [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
info: [drm] Driver supports precise vblank timestamp query.
drmn1: taking over the fictitious range 0xd0000000-0xe0000000
info: [drm] Enabling RC6 states: RC6 off, RC6p off, RC6pp off
info: [drm] Connector eDP-1: get mode from tunables:
info: [drm]   - kern.vt.fb.modes.eDP-1
info: [drm]   - kern.vt.fb.default_mode
info: [drm] Connector VGA-1: get mode from tunables:
info: [drm]   - kern.vt.fb.modes.VGA-1
info: [drm]   - kern.vt.fb.default_mode
info: [drm] Connector HDMI-A-1: get mode from tunables:
info: [drm]   - kern.vt.fb.modes.HDMI-A-1
info: [drm]   - kern.vt.fb.default_mode
info: [drm] Connector DP-1: get mode from tunables:
info: [drm]   - kern.vt.fb.modes.DP-1
info: [drm]   - kern.vt.fb.default_mode
fbd1 on drmn1
VT: Replacing driver "vga" with new "fb".
info: [drm] Initialized i915 1.6.0 20080730 for drmn1 on minor 1
error: [drm:pid988:gen6_sanitize_pm] *ERROR* Power management
discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 17000000, was 12000000
"

An external TV, Screen works just fine. Internal LCD nope.
I have opened: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198937
and attached all my data.

The last thing to try is to update to latest snapshot and try to revert
all changes for intel_display.c as
https://svnweb.freebsd.org/changeset/base/277959 (thanks to lutz.bichler)


-- 
Stefan Parvu <sparvu at kronometrix.org>