drm-devel-kmod-4.16.g20180824 hangs my laptop

[Jakob Alvermark]

On 9/14/18 11:30 AM, Johannes Lundberg wrote:
>
>
> On Thu, Sep 13, 2018 at 4:37 PM Jakob Alvermark <jakob at alvermark.net 
> <mailto:jakob at alvermark.net>> wrote:
>
>     On 9/6/18 1:25 PM, Jakob Alvermark wrote:
>     > On 9/6/18 12:45 PM, Niclas Zeising wrote:
>     >> On 09/06/18 12:35, Johannes Lundberg wrote:
>     >>>
>     >>> Jakob Alvermark writes:
>     >>>
>     >>>> Hi,
>     >>>>
>     >>>>
>     >>>> When I updated to drm-devel-kmod-4.16.g20180824 my laptop hangs.
>     >>>> Previous version of drm-devel-kmod worked.
>     >>>>
>     >>>> kld_list="/boot/modules/i915kms.ko" in /etc/rc.conf
>     >>>>
>     >>>> When it boots and the modules load the screen goes blank
>     (backlight
>     >>>> still on) and the machine is totally non-responsive.
>     >>>>
>     >>>> CPU: Intel(R) Pentium(R) CPU N3540 @ 2.16GHz (2166.72-MHz
>     K8-class
>     >>>> CPU)
>     >>>>
>     >>>> vgapci0 at pci0:0:2:0: class=0x030000 card=0x09331025
>     chip=0x0f318086
>     >>>> rev=0x0e hdr=0x00
>     >>>>    vendor = 'Intel Corporation'
>     >>>>    device = 'Atom Processor Z36xxx/Z37xxx Series Graphics &
>     Display'
>     >>>>    class = display
>     >>>>    subclass = VGA
>     >>>>
>     >>>
>     >>> Hi
>     >>>
>     >>> Did you update the kernel as well?
>     >>>
>     >>> I think this is due to a change in HEAD. You need to wait until
>     >>> the binary packages have been updated with a new build or
>     build drm
>     >>> drivers from ports/source with the new head in /usr/src.
>     >>>
>     >>> This would be the same for stable/next as well.
>     >>
>     >> Which versions of FreeBSD and of the -devel port were the last
>     ones
>     >> that worked?  What happens if you downgrade the port to that
>     version,
>     >> but keep the same version of FreeBSD base as is failing?
>     >
>     >
>     > Did some further testing:
>     >
>     > drm-devel-kmod-4.16.g20180822 does not work. Same thing as above,
>     > blank screen and hang.
>     >
>     > drm-devel-kmod-4.15.g20180802 works.
>     >
>     > I am now at r338488
>
>
>     Another thing I have noticed:
>
>     With drm-devel-kmod-4.15.g20180802 my machine hangs after a while,
>     around 24 hours. If I leave it on overnight it is usually is hung the
>     next day.
>
>     Black screen an no response to anything, keyboard or power button. I
>     have to power off hard.
>
>     This doesn't seem to happen with drm-next-kmod-4.11.g20180822.
>
> Thanks for reporting. I think there's a memory leak affecting all 
> drivers in drm-devel-kmod.


I was guessing it was a memory leak.

I will stay on drm-next-kmod-4.11.g20180822 for now, but I will be happy 
to test anything if requested.


Jakob