Jirka Posted February 23, 2018 Share Posted February 23, 2018 Hello, we are testing set of 50devices and on 20%-30% of them we are detecting errors, which seems as hardware issues with eMMC cards. Issues looks very similar to us. Example of device usage is: 1) device boots operating system (Armbian GNU/Linux kernel 3.14.79-odroidc2), 2) device works as expected for hours/days, 3) system logs starts containing emmc errors, 4) system freezes with console message: Message from syslogd@avast-hkc213254dfea768 at Feb 14 13:49:58 ... kernel:[189164.931207] Disabling IRQ #250 After consultation with Hardkernel we tried theirs ubuntu image and it looks better. After 4 hour test we do not detect broken card (test continues), with Armbian we had first issue after few minutes. Can you help us? Reference to Hardkernel forum post https://forum.odroid.com/viewtopic.php?f=139&t=30244 Thank you Link to comment Share on other sites More sharing options...
TonyMac32 Posted February 23, 2018 Share Posted February 23, 2018 I don't have a C2, but please update the topic to reflect the board in question, in this case "Odroid C2 Default eMMC issue". Link to comment Share on other sites More sharing options...
Jirka Posted February 28, 2018 Author Share Posted February 28, 2018 We found that described behavior is caused by https://github.com/armbian/build/blob/master/patch/kernel/odroidc2-default/remove-emmc-calibration.patch . When calibration is disabled it causes instability of some boards. Link to comment Share on other sites More sharing options...
Igor Posted February 28, 2018 Share Posted February 28, 2018 I remove the patch - you run your own kernel or shall we push an update to the repository? Thanks. Link to comment Share on other sites More sharing options...
Jirka Posted February 28, 2018 Author Share Posted February 28, 2018 We build our own kernel so updated git is ok. Thank you. Link to comment Share on other sites More sharing options...
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