Am Mon, 19 Sep 2016 12:14:04 -0400 hat Roy Gillotti gillottir@gmail.com geschrieben:
Hi Roy,
as Nikolaus mentioned that he never connected HDMI to the board: Can you do the tests with HDMI disconnected?
That would tell us whether Nikolaus has a special EVM (or magic AC Adaptor) or whether the issue REALLY has something to do with HDMI.
What Kernel are you using? I've upgraded to the letux 4.8 RC5 via aTc's repo update and noticed this behavior with my bench supply capable of delivering 4A.
5.1V - Some instabilities HDMI, SATA resets and USB devices blink out. Sometimes freezes before getting to X.
5.2V - Boots up Consistently. random Freezes when using Firefox when attempting to watch a Youtube video. Sometime just HDMI blinks out occasionally.
5.3V - Seems stable running CPU intensive things. Firefox running youtube video, running 720p video in smplayer and quake 2 at once. highest current draw observed ~1.6A during spikes. Random Freeze occurs generally within 5 to 10 minutes of use.
5.4V - Same as 5.3V
5.5V - Same as 5.4V
5.6V - 5V LED blinks, HDMI blinks out or won’t go into a resolution above 1024x768. Can seem to use firefox, youtube videos without issues.
5.7V - 5V LED is off, but turns on when drawing ~1A. HDMI working appropriately.
5.8V - Same as 5.7V
5.9V - 5V LED is off, but turns on when drawing ~1A. oddly the 1024x768 bug appears again at this voltage. powered off a few times to confirm it.
6.0V - 5V LED is only displays as on with current draw is ~1.4A. Seems stable otherwise.
6.2V - 5V LED is only blinked a few times, when the current draw briefly spiked about 1.6A. seems just as stable.
6.3V - 5V LED off completely. No noticeable blinks. appears stable.
On Mon, Sep 19, 2016 at 12:06 PM, Tony Lindgren tony@atomide.com wrote:
- H. Nikolaus Schaller hns@goldelico.com [160919 02:55]:
Am 19.09.2016 um 11:39 schrieb Grazvydas Ignotas notasas@gmail.com: I could give it a try on my uEVM to add another data point. FWIW my uEVM has been always rock stable (12V supply), but I haven't updated my kernel for a while.
Yes, would be nice to compare your results and observations.
My omap5-uevm is on a 5V power supply right now it seems, I'm pretty sure it used to have 12V supply earlier.
Regards,
Tony _______________________________________________ Kernel mailing list Kernel@pyra-handheld.com http://pyra-handheld.com/cgi-bin/mailman/listinfo/kernel