Black Rectangle about web-greeter HOT 13 CLOSED

Issue seems to be resolved.

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Which graphics drivers are you using? Nvidia?

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Hardware: Lenovo y50-70 laptop with i7 and 860m

lspci | grep VGA:
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)

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I have the exact same issue. It happens about 2 out of 3 times.

$ sudo lshw -c video
  *-display:0             
       description: VGA compatible controller
       product: Mobile GM965/GL960 Integrated Graphics Controller (primary)
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 0c
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:28 memory:e4400000-e44fffff memory:d0000000-dfffffff ioport:4000(size=8)

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I have the same issue. For whatever reason, it becomes a lot worse when using lightdm-webkit-material as a greeter.

  *-display               
       description: VGA compatible controller
       product: GK106 [GeForce GTX 650 Ti]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:29 memory:f6000000-f6ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:e000(size=128) memory:f7000000-f707ffff

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Same issue here with Intel Graphics. And also a lot worse with lightdm-webkit-material as @archshift

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Same issue with nvidia graphics. GTX 550 Ti with latest nvidia proprietary driver from Arch Linux repository.

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I'm fairly certain this issue is a bug in webkit2gtk. I don't have time to report it upstream at the moment, so please feel free to do so if any of you have time to do it 😄

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Yes, there is, in left top corner, but for me, is small, sometimes tak emiddle screen.

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There seem to be upstream fixes in the webkit unstable branch adressing UI flickering.
http://webkitgtk.org/2016/03/01/webkitgtk2.11.91-released.html

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Is anyone still experiencing this issue? Please let me know. Thanks!

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Same.

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@lots0logs I am experiencing the bug using webkit2gtk 2.14.5-1 in ArchLinux

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