drm-devel-kmod-4.16.g20180824 hangs my laptop
Jakob Alvermark
jakob at alvermark.net
Mon Oct 1 12:22:35 UTC 2018
On 9/14/18 9:03 PM, Jakob Alvermark wrote:
> 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.
On request from Niclas, I tried to get a dump with
drm-devel-kmod-4.16.g20180824 on r339036 but it does not give me a dump.
Manually triggering a dump with 'sysctl debug.kdb.panic=1' works fine.
Jakob
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