i1915drmkms system crash in NetBSD 7.0

[Chuck Zmudzinski <brchuck%hotmail.com@localhost>]

Hello friends...

I have a system with ASROCK B85M Pro4 Board and Intel Core i5-4590S 
processor which has Intel HD 4600 integrated graphics. I thought I would 
try booting NetBSD/amd64 7.0 on it, since I read on the web that NetBSD 
plans to support Intel integrated graphics up to Haswell in NetBSD 7.0.

It crashed using the GENERIC kernel a few seconds after the bootloader 
loaded the kernel. On the console screen I could see that the i915drmkms 
driver crashed the system and the screen immediately went blank at that 
time.

To get this system to boot I built a GENERIC kernel without the 
i915drmkms option, and used it to install and run on the system, and 
when running startx the system crashes immediately with the screen going 
blank. I thought maybe it would at least run X11 with the generic VESA 
driver. But it totally crashed the system. Obviously the support for 
Intel integrated graphics on the Haswell microarchitcture is hit and 
miss and NetBSD 7.0 does not support all configurations.

I also tried the legacy i915drm driver without kms which by default is 
disabled in the GENERIC kernel config, but that kernel config would not 
build without compilation errors.

Any ideas of what to try? NetBSD/i386 7.0? or NetBSD current? Tweak some 
BIOS settings such as amount of shared videoram (mine was set to 256 MB)?

Thanks

Chuck


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus