[Bug 110374] New: [Ubuntu 19.04] The screen display incompleted when rotate the screen to left/right

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110374

            Bug ID: 110374
           Summary: [Ubuntu 19.04] The screen display incompleted when
                    rotate the screen to left/right
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: quanxian.wang at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 143909
  --> https://bugs.freedesktop.org/attachment.cgi?id=143909&action=edit
screen shot

Note:This is a common bug for all tested platforms including CFL-S/Bean
Canyon/CFL-H/WHL-U/June Canyon.

This issue is a regression issue compared with 18.10 (v4.18)

We have verified on 19.04 beta1 (v5.0.0) kernel, linux official kernel, and
latest drm-intel-next kernel, all can reproduced.

Just list the platform information for CFL-S.

Platform information:
Label: CFLS04
Processor: CoffeeLake DT, Genuine Intel(R) CPU 0000 @ 2.60GHz, P0 Stepping, GT2
Bios: CNLSFWX1.R00.X144.B02.1805180751
Chipset: CNL B0 Stepping 

OS: Ubuntu 19.04
Kernel: 5.0.0-8-generic

Details:

Only half of the screen is displayed, when run "xrandr --output $device
--rotate left/right".

Please check the attachment "Screen_half_rotate_CFLS04_19.04.jpg".

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