https://community.sony.rs/t5/z-series/scrambled-screen-on-log-on/m-p/3575718#M115078 <P>Hi, I am experiencing a rare scrambling of the screen sometimes during log on.</P><P>See video:</P><P><A title="Scrambling" href="https://drive.google.com/file/d/0B-YRPs9E6zyUQ2FXdGZoX0hwdEk/view?usp=drivesdk" target="_self" rel="nofollow noopener noreferrer">https://drive.google.com/file/d/0B-YRPs9E6zyUQ2FXdGZoX0hwdEk/view?usp=drivesdk</A></P><P>Fortunately it does not happen often (only about 1 every 50 times) but nonetheless it is still annoying.</P><P>Once the screen is scrambled, sometimes it recovers by switching it off and leaving the phone alone for 5 min.&nbsp;</P><P>It always fixes itself after a hard-reset &nbsp;(pressing power+vol-up).</P><P>I suspect it is a software issue, otherwise I can't explain why it happens only during some logins and not always.</P><P>I have tried...</P><P>1) factory reset with minimal install (big improvement with less frequent upsets)</P><P>2) opening the phone to check if there is some part loose or broken (all seems alright)</P><P>Has anybody experienced something similar?</P> Sat, 16 Sep 2017 14:48:51 GMT Knasil 2017-09-16T14:48:51Z https://community.sony.rs/t5/z-series/scrambled-screen-on-log-on/m-p/3575718#M115078 <P>Hi, I am experiencing a rare scrambling of the screen sometimes during log on.</P><P>See video:</P><P><A title="Scrambling" href="https://drive.google.com/file/d/0B-YRPs9E6zyUQ2FXdGZoX0hwdEk/view?usp=drivesdk" target="_self" rel="nofollow noopener noreferrer">https://drive.google.com/file/d/0B-YRPs9E6zyUQ2FXdGZoX0hwdEk/view?usp=drivesdk</A></P><P>Fortunately it does not happen often (only about 1 every 50 times) but nonetheless it is still annoying.</P><P>Once the screen is scrambled, sometimes it recovers by switching it off and leaving the phone alone for 5 min.&nbsp;</P><P>It always fixes itself after a hard-reset &nbsp;(pressing power+vol-up).</P><P>I suspect it is a software issue, otherwise I can't explain why it happens only during some logins and not always.</P><P>I have tried...</P><P>1) factory reset with minimal install (big improvement with less frequent upsets)</P><P>2) opening the phone to check if there is some part loose or broken (all seems alright)</P><P>Has anybody experienced something similar?</P> Sat, 16 Sep 2017 14:48:51 GMT https://community.sony.rs/t5/z-series/scrambled-screen-on-log-on/m-p/3575718#M115078 Knasil 2017-09-16T14:48:51Z