Opened 4 months ago

Last modified 5 days ago

#19065 new bug

Screen tearing on Skylake GT2

Reported by: Pintaio Owned by: rudolfc
Priority: normal Milestone: Unscheduled
Component: Drivers/Graphics/intel_extreme/skylake Version: R1/Development
Keywords: Cc:
Blocked By: Blocking:
Platform: All

Description (last modified by Pintaio)

Hi I have lots of screen tearing, specially when I move or resize a window.

My laptop: Dell Latitude E5570 Intel I5-6300U Intel HD520 (Skylake GT2)

It happens in Beta4, Beta5 (tc0) and in nightlies (64 And 32 bits). It happens with whatever resolution, colordepth or refresh I've tested. My last test is on hrev58046

Attachments (3)

outputfile.mpg (1.9 MB ) - added by Pintaio 4 months ago.
Video moving and resizing window
syslog (183.8 KB ) - added by Pintaio 4 months ago.
syslog.2 (112.4 KB ) - added by bruno 6 days ago.
Bruno's syslog Haiku nightly 64bit newest (hrev58402)

Change History (8)

comment:1 by Pintaio, 4 months ago

Description: modified (diff)

by Pintaio, 4 months ago

Attachment: outputfile.mpg added

Video moving and resizing window

by Pintaio, 4 months ago

Attachment: syslog added

comment:2 by waddlesplash, 4 months ago

Component: - GeneralDrivers/Graphics/intel_extreme/skylake
Owner: changed from nobody to rudolfc

comment:3 by bruno, 6 days ago

I use a HP pavilion 17 - g142ng with intel Skylake GT2 and have same problems with 1920 x 1080 (SDC 17,3") haiku 64bit nightly after reading the report here, I just recognized this tearing too. But I do not care much!

The Brightness-Slider is working just fine!

device Display controller (VGA compatible controller, VGA controller) [3|0|0]

vendor 8086: Intel Corporation device 1916: Skylake GT2 [HD Graphics 520]

Last edited 6 days ago by bruno (previous) (diff)

by bruno, 6 days ago

Attachment: syslog.2 added

Bruno's syslog Haiku nightly 64bit newest (hrev58402)

comment:4 by bruno, 5 days ago

It is really hard to notice, I think it is no bug, it is an enhencement or just normal! I have this on all other systems as well!

comment:5 by rudolfc, 5 days ago

Hi, this is normal indeed. This is because redrawing intersects with the screen refrehlsh taking place. Normally one would enable 'sync to vertical retrace' so redrawing video or a window happens outside the users view. Best used with double buffering: drawing in back buffer and then switching back- and front buffer during retrace'. I guess since we have no hardware acceleration and mostly no video overlay it's not really possible though.

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