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Date:      Fri, 1 Dec 2017 15:31:52 +0300
From:      Greg V <greg@unrelenting.technology>
To:        freebsd-x11@freebsd.org
Subject:   Re: drm-next-kmod + Broadwell = console 0.2 Hz refresh
Message-ID:  <1dee67bd-1bb0-c8dc-8d4a-b7eed1324cb0@unrelenting.technology>
In-Reply-To: <4a544653-f476-7e74-e21d-b8caecf2b8fa@alvermark.net>
References:  <8809bab8-8b15-93b1-36b2-1414f165c5d7@alvermark.net> <4a544653-f476-7e74-e21d-b8caecf2b8fa@alvermark.net>

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On 12/01/2017 15:26, Jakob Alvermark wrote:
> On 11/27/17 15:37, Jakob Alvermark wrote:
>> Hi,
>>
>>
>> I have been using drm-next-kmod for a while now, and it works fine, 
>> except for this little annoying thing.
>>
>> On this Lenovo ThinkPad Yoga 12 (i7-5500U) I have 
>> kld_list="/boot/modules/i915kms.ko" in /etc/rc.conf
>>
>> Shortly after the module is loaded, the console (vt) refreshes only 
>> about every 5 seconds or so.
>>
>> This only happens on the builtin laptop screen, when I have an 
>> external monitor connected the external monitor is working normally. 
>> (Display is output to both, and the internal screen still has the 
>> slow refresh)
>>
>> Starting X and switching back to vt or quitting X and it is working 
>> normally.
>>
>> Another thing that might be related; switching windows in X with 
>> alt-tab (xfce) is also slow (on the order of 5 seconds).
> Tested this with scfb, and alt-tabbing is quick.
Hi.

Can you test alt+tabbing with modesetting/glamor?
I'm not sure what Xorg picks up by default, but probably the intel DDX 
which kinda sucks.

xorg.conf:

Section "Device"
     Option "AccelMethod" "glamor"
     Option "DRI" "3"
     Identifier "Card0"
     Driver "modesetting"
     BusID "PCI:0:2:0" # might be different
EndSection



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