Bug 100351 - [SKL+] 90/270 rotated display is blurry
Summary: [SKL+] 90/270 rotated display is blurry
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: DRI git
Hardware: Other Linux (All)
: high critical
Assignee: Ville Syrjala
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard: ReadyForDev
Keywords:
Depends on:
Blocks:
 
Reported: 2017-03-23 08:17 UTC by Tvrtko Ursulin
Modified: 2017-07-27 16:55 UTC (History)
1 user (show)

See Also:
i915 platform: BXT, GLK, KBL, SKL
i915 features: display/Other

Attachments

Description Tvrtko Ursulin 2017-03-23 08:17:10 UTC 
There is a confusion with the types used for drm rects (or something along those lines, Ville would know for sure) causing the skl_update_scaler to incorrectly think it needs to enable scaling (needs_scaling computation) when it is not needed. This results in a blurred display.

This would affect any user wanting to use a monitor in portrait mode, or "tabletty" products pulling in from drm-tip as well.
Comment 1 Jani Saarinen 2017-04-06 15:05:49 UTC 
Fix from Ville might help here. Assigning to.
Comment 2 Jani Saarinen 2017-05-12 07:45:37 UTC 
Tvrtko, have you tested patches?
Comment 3 Jari Tahvanainen 2017-06-05 08:52:15 UTC 
Assuming that https://patchwork.freedesktop.org/series/22295/ are the ones giving the answer on this...
Comment 4 Ville Syrjala 2017-06-06 18:06:34 UTC 
commit d96a7d2adb040a67e163a82dad6316f9f572498a
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date:   Fri Mar 31 21:00:54 2017 +0300

    drm/i915: Fix scaling check for 90/270 degree plane rotation
Comment 5 Jani Saarinen 2017-06-07 06:41:01 UTC 
Tvrtko, please verify in tip when time.

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