Haswel / i915 experimental test result

Isaac Raway isaac at mm.st
Mon Nov 23 22:30:45 UTC 2015

Yes, /boot/kernel.i915 contains the new kernel.

I use UEFI boot, grub has always been really hard to setup on
this machine.

I used this bit you quote from the page to try to boot into the kernel:

# nextboot -k kernel.i915 reboot

But this is making me think it really didn't work because that's the
wrong diredtory that it is loading i915kms from, and I think we're
looking for i915.ko anyway -- which isn't listed at all.

$ kldstat -v|grep i915 44    1 0xffffffff8248d000 6c2bb    i915kms.ko
(/boot/kernel/i915kms.ko)        537 vgapci/i915kms

I'll try to find more info on booting an alternative kernel with PC-


On Mon, Nov 23, 2015, at 04:15 PM, Arto Pekkanen wrote:
> Do you have the directory /boot/kernel.i915 with the experimental
> kernel files in it? That directory must exist before /boot/loader can
> boot the experimental kernel from it.
> If you do
> # nextboot -k kernel.i915 reboot
> as root, then /boot/loader should boot kernel from
> /boot/kernel.i915/kernel -file after next reboot.
> The "nextboot -k <kernel>" -command simply writes a "hint file" in
> /boot -directory, which overrides the default kernel path for
> /boot/loader.
> If these instructions do not help, then problem is that I just have no
> idea how a PC-BSD system has been set up. I don't use PC-BSD or even
> ZFS myself. I only use base FreeBSD 10.2 with UEFI (which does not
> require installation of any stage0 and/or stage1 bootcode, only a 900k
> partition with specific type GUID and the file /boot/boot1.efifat
> written as partition contents with dd) or a standard gpt setup (with
> /boot/pmbr as stage0 and /boot/gptboot as stage1).
> I've heard PC-BSD uses GRUB in some way. Is it possible that GRUB
> loads the /boot/kernel directly? If it does, then it does NOT care
> about the nextboot hint file at all, unlike /boot/loader. IF (and only
> IF) GRUB loads the system kernel image directly from boot partition
> (emphasis on __directly__), then you need to somehow configure GRUB to
> offer a boot menu item for the specific kernel. Unfortunately I cannot
> remember how GRUB is configured since it been a decade since I last
> time had to bother configuring GRUB.
> You could also ask in PC-BSD forums something like "how do I boot a
> custom kernel built in /boot/<kernel_name>" ...
> On 23.11.2015 15:36, Isaac Raway wrote:
>> Hello,
>> I've followed the directions on this page to install the experimental
>> i915 kernel:
>> https://wiki.freebsd.org/Graphics/Update%20i915%20GPU%20driver%20to%20Linux%203.8
>> I'm not sure that I booted into it correctly (pretty green with BSD
>> in general, and only some experience with kernel builds on Linux). I
>> have a Dell Latitude E7240 with a Haswell chip. Running PC-BSD 10.2
>> if that matters. I'm uncertain about if the boot did what I think it
>> did because the uname output still say's it's a -RELEASE build:
>> # uname -a
>> FreeBSD sebastian 10.2-RELEASE-p4 FreeBSD 10.2-RELEASE-p4 #0: Tue Aug
>> 18   15:15:36 UTC 2015 root at amd64-
>> builder.pcbsd.org:/usr/obj/usr/src/sys/GENERIC  amd64
>> The driver doesn't seem to load, using PC-BSD's Display wizard it
>> reports a failure then restarts the wizard when I try to start X
>> using the intel driver.
>> I've attached the dmesg output as requested on the above page. Let me
>> know if anything else would be useful.
>> IJR
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