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USB SSD disconnect after a while #3814
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Have you tried using a powered USB hub? I have had this issue before and a powered USB 3.0 hub was able to fix the problem. I know this does not explain the issues showing up after a update but it could be a power delivery issue. |
No, but because I do weekly auto backups of my system I was able to roll back to a backup before the update and from what I see I was on kernel 4.19. I'll report back if the problem is present with kernel 4.19 or not. |
I can confirm that rolling back to kernel 4.19 resolved my problem with usb ssd disconnections. |
I can not reproduce this issue. I have a raspberry pi 4 8gb running 24/7 w/ usb drives w/o any issues. hmmmm |
That's quite interesting, I am not a kernel developer so I am not the most
aware but 4.19 is a LTS so you could just keep backporting the kernel by
recompiling any patches that are added in this repo.
This may be bad advice so please take it with a grain of salt.
…On Wed, Aug 26, 2020 at 9:08 AM Simon Gardling ***@***.***> wrote:
I can not reproduce this issue. I have a raspberry pi 4 8gb running 24/7
w/ usb drives w/o any issues. hmmmm
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From experience, I think the issue is power related |
I've had issues w/ usb HDDs (as in the spinning kind) pulling to much power and the pi just shuts off, tries to turn back on, the hdd pulls to much power, and it's stuck like that. That's why I use an enclosure so the power is provided by the wall outlet. |
For what it's worth, I don't think this issue is related to the HDD not having enough power as I run mine on a powered USB hub. Even when I don't the drive is only reported to use a maximum of 896mA of current from I'm running a Samsung 980 Pro NVMe drive inside a RTL9210 enclosure, so the NVMe drive is treated as a USB Mass Storage device with UAS enabled. I too see that |
Goodday! It's seems i solve the problem aflter replacing short usb cable to long usb cable. I have ssd usb drive UPDATE: with short usb cable read speed ~270МB/s(i have odroid c4), write speed ~45MB/s; with long sub cable i have 32MB/s read and write speed. Seems there is a bug on high data transfer rate... |
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My external SSD attached to one of the USB3 ports of my rpi4 is not accessible after some time, from the dmsg log seems to me it get disconnected, but I'm not sure.
The sata/usb thing I am using is one of the jmicron crappy one that needs UAS disabled to work well.
This setup has been ultra stable for months (with 0 problems and no reboots) until I think 2/3 weeks ago I did a sudo apt update && sudo apt full-upgrade, maybe some update messed up my system?
System
RPI 4 4gb with raspbian lite on sd card
Logs
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