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The following reply was made to PR kern/49495; it has been noted by GNATS.
From: Patrick Welche <prlw1%cam.ac.uk@localhost>
To: Taylor R Campbell <riastradh%NetBSD.org@localhost>
Subject: Re: xsrc/49495
Date: Mon, 1 Jun 2015 16:28:53 +0100
On Thu, May 14, 2015 at 12:23:19AM +0000, Taylor R Campbell wrote:
> [resent to gnats-bugs, hoping that's the right address for PR followup]
> Can you please try running the attached program and seeing whether
> anything shows up on your display?
> make writefb
> ./writefb /dev/ttyE0 0xff350053
> (Run as root; this will permanently set ttyE0 into dumbfb mode, unless
> you write another program that puts it back into text mode.)
> This will determine whether the problem is just with the kernel
> driver, or whether X is actually involved too.
I reproduced the no X with serial console problem on a Dell OptiPlex GX620
without extra radeon card, i.e., with a
i915drmkms0 at pci0 dev 2 function 0: Intel 82945G/P Integrated Graphics Device (rev. 0x02)
From ttyE0, without serial console, without X running:
# ./writefb /dev/ttyE0 0xff350053
writefb: width 1024
writefb: height 768
writefb: depth 32
writefb: cmsize 256
writefb: mod 0
and the background went purple (!)
This is the same as the output of xdpyinfo on this particular setup.
(With serial console, I can't get to ttyE0 - all is black (Out of Range
on this monitor), if I ssh in, I get the same result)
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