Re: Intel graphics problems

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Fri, Apr 10, 2015 at 06:49:29AM +0800, Paul Goyette wrote:
> I've noticed some strange "distortions" on my display, and not at all sure
> where they are coming from.  They're not exactly fatal, but they most
> definitely are annoying!
> 
> First, the environment.  It's a build-your-own system, with an ASUS H81M-C
> motherboard, and using on-board (in-CPU?) graphics.  The CPU is identified
> by cpuctl(8) as
> 
> cpu0: "Intel(R) Core(TM) i5-4460  CPU @ 3.20GHz"
> cpu0: Intel 4th gen Core, Xeon E3-12xx v3 (Haswell) (686-class), 3192.75 MHz
> cpu0: family 0x6 model 0x3c stepping 0x3 (id 0x306c3)
> 
> This is using i915drmkms - here's the relevant dmesg lines:
> 
> i915drmkms0 at pci0 dev 2 function 0: vendor 8086 product 0412 (rev. 0x06)
> drm: Memory usable by graphics device = 2048M
> drm: Supports vblank timestamp caching Rev 2 (21.10.2013).
> drm: Driver supports precise vblank timestamp query.
> i915drmkms0: interrupting at ioapic0 pin 16 (i915)
> intelfb0 at i915drmkms0
> i915drmkms0: info: registered panic notifier
> i915drmkms0: More than 8 outputs detected via ACPI
> drm: Enabling RC6 states: RC6 on, RC6p off, RC6pp off
> 
> My display is a Samsung 20-inch device, with a default/native resolution of
> 1600x900
> 
> The box is running NetBSD amd64/7.99.8 (installed from the sets that were at
> one time available on nyftp.n.o from 201503300400Z).

Please update your kernel, you need this commit:
date: 2015/04/03 01:04:24;  author: riastradh;  state: Exp;  lines: +248 -59
Implement pmap_pv(9) for x86 for P->V tracking of unmanaged pages.

Proposed on tech-kern with no objections:

https://mail-index.netbsd.org/tech-kern/2015/03/26/msg018561.html

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--