(08-10-2017, 03:44 AM)Luke Wrote: [ -> ] (08-10-2017, 03:40 AM)hene Wrote: [ -> ]I have this same problem but it seems to get worse when plugged in to the charger. So most likely there is some noise in the power circuits. Quick test with oscilloscope would most likely show how much noise there is. Few extra caps on the power lines could fix it.
I trust that you've read this and updated to the most recent release version of ubuntu ?
Yes sir. Screen flicker got fixed with that but not the noise on screen. (random pixels flickering) If the older batches didn't have these problems then it might be that the displays have some sort of issue. Either with filtering on the power lines or signal.
(08-10-2017, 05:27 PM)hene Wrote: [ -> ] (08-10-2017, 03:44 AM)Luke Wrote: [ -> ] (08-10-2017, 03:40 AM)hene Wrote: [ -> ]I have this same problem but it seems to get worse when plugged in to the charger. So most likely there is some noise in the power circuits. Quick test with oscilloscope would most likely show how much noise there is. Few extra caps on the power lines could fix it.
I trust that you've read this and updated to the most recent release version of ubuntu ?
Yes sir. Screen flicker got fixed with that but not the noise on screen. (random pixels flickering) If the older batches didn't have these problems then it might be that the displays have some sort of issue. Either with filtering on the power lines or signal.
Ah yes, I remember. Did you end up filing a support ticket ?
(08-11-2017, 12:40 AM)Luke Wrote: [ -> ] (08-10-2017, 05:27 PM)hene Wrote: [ -> ] (08-10-2017, 03:44 AM)Luke Wrote: [ -> ] (08-10-2017, 03:40 AM)hene Wrote: [ -> ]I have this same problem but it seems to get worse when plugged in to the charger. So most likely there is some noise in the power circuits. Quick test with oscilloscope would most likely show how much noise there is. Few extra caps on the power lines could fix it.
I trust that you've read this and updated to the most recent release version of ubuntu ?
Yes sir. Screen flicker got fixed with that but not the noise on screen. (random pixels flickering) If the older batches didn't have these problems then it might be that the displays have some sort of issue. Either with filtering on the power lines or signal.
Ah yes, I remember. Did you end up filing a support ticket ?
No. I doubt there is anything that can be done and it doesn't really bother me that much.
I did contact support and they offered to replace it (YMMV), but I'm with you, it doesn't bother me much.
(08-11-2017, 01:34 PM)chrisb Wrote: [ -> ]I did contact support and they offered to replace it (YMMV), but I'm with you, it doesn't bother me much.
How do they replace it? You send it back and they send a new one?
(08-11-2017, 02:16 PM)hene Wrote: [ -> ] (08-11-2017, 01:34 PM)chrisb Wrote: [ -> ]I did contact support and they offered to replace it (YMMV), but I'm with you, it doesn't bother me much.
How do they replace it? You send it back and they send a new one?
Yes, and they would reimburse the shipping.