From: "Michel Dänzer" <michel@daenzer.net>
To: sylvain.bertrand@gmail.com
Cc: dri-devel@lists.freedesktop.org
Subject: Re: [amdgpu][tahiti xt] cursor motion smoothness
Date: Tue, 3 Jul 2018 11:01:46 +0200 [thread overview]
Message-ID: <67a86569-1be3-e6a8-2c9c-e1f84b4e06db@daenzer.net> (raw)
In-Reply-To: <e5de99df-48ac-730f-0ab9-7ba2ca42664e@daenzer.net>
On 2018-07-03 10:54 AM, Michel Dänzer wrote:
> On 2018-07-02 10:10 PM, sylvain.bertrand@gmail.com wrote:
>> On Mon, Jul 02, 2018 at 06:43:48PM +0200, Michel Dänzer wrote:
>>>> Sending the logs as direct email to your personal email box.
>>>
>>> Does using xf86-input-libinput instead of xf86-input-evdev help?
>>
>> I did plan to switch to libinput in the futur, but:
>>
>> I did test the xinput events and I get for a reasonable mouse motion speed an
>> update of coords for each column of the screen (full hd).
>>
>> It means that the cursor is supposely displayed for nearly all columns of the
>> screen. For a fast mouse motion, the coord updates jump to a few tens of
>> pixels. (1000Hz mouse)
>>
>> Those numbers does not change from 60Hz to 144Hz, then I can rule out the input
>> code.
>>
>> If it's not my eyes or the screen itself, the pb will be in the cursor update
>> code path from the xserver down to the driver...
>
> Unless your xserver build ends up with INPUTTHREAD undefined for some
> reason, input events are processed in a separate thread, and the HW
> cursor position is updated accordingly ASAP.
Also make sure you do not pass -dumbSched on the Xorg command line, and
do not disable Option "SilkenMouse" in xorg.conf.
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Mesa and X developer
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next prev parent reply other threads:[~2018-07-03 9:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-01 12:52 [amdgpu][tahiti xt] cursor motion smoothness sylvain.bertrand
2018-07-02 9:24 ` Michel Dänzer
2018-07-02 9:29 ` Michel Dänzer
2018-07-02 14:04 ` sylvain.bertrand
2018-07-02 14:22 ` Michel Dänzer
2018-07-02 15:28 ` sylvain.bertrand
2018-07-02 16:43 ` Michel Dänzer
2018-07-02 20:10 ` sylvain.bertrand
2018-07-03 8:54 ` Michel Dänzer
2018-07-03 9:01 ` Michel Dänzer [this message]
2018-07-03 14:46 ` sylvain.bertrand
2018-07-03 17:06 ` Michel Dänzer
2018-07-03 14:40 ` sylvain.bertrand
2018-07-02 16:30 ` sylvain.bertrand
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