*** This bug is a duplicate of bug 1848790 ***
https://bugs.launchpad.net/bugs/1848790
Hi @hui.wang,
the RPi4 boots off the sdcard normally but then I use a USB3 enclosure
with disks to assemble a RAID1 BTRFS device to be used as rootfs. At the
end of the boot, there is no /dev/mmcblk0* device:
#> ls -ld /dev/m*
drwxr-xr-x 2 root root 80 Nov 30 15:42 /dev/mapper
crw------- 1 root root 10, 227 Nov 30 15:42 /dev/mcelog
crw-r----- 1 root kmem 1, 1 Nov 30 15:42 /dev/mem
crw------- 1 root root 10, 56 Nov 30 15:42 /dev/memory_bandwidth
drwxrwxrwt 2 root root 40 Nov 30 15:41 /dev/mqueue
Anyway, this is just "an annoyance" that makes just a bit harder to
switch kernel, the real problem is this one:
Nov 29 10:36:05 raspippa kernel: [39364.240711] xhci_hcd 0000:01:00.0: WARN
Cannot submit Set TR Deq Ptr
Nov 29 10:36:05 raspippa kernel: [39364.240725] xhci_hcd 0000:01:00.0: A Set TR
Deq Ptr command is pending.
Nov 29 10:36:05 raspippa kernel: [39364.373694] usb 2-1: reset SuperSpeed Gen 1
USB device number 2 using xhci_hcd
Nov 29 10:36:05 raspippa kernel: [39364.396405] program smartctl is using a
deprecated SCSI ioctl, please convert it to SG_IO
Nov 29 10:36:35 raspippa kernel: [39394.961204] xhci_hcd 0000:01:00.0: WARN
Cannot submit Set TR Deq Ptr
Nov 29 10:36:35 raspippa kernel: [39394.961218] xhci_hcd 0000:01:00.0: A Set TR
Deq Ptr command is pending.
Nov 29 10:36:36 raspippa kernel: [39395.324521] usb 2-1: reset SuperSpeed Gen 1
USB device number 2 using xhci_hcd
Nov 29 10:36:36 raspippa kernel: [39395.344764] sd 0:0:0:0: [sda] tag#0 FAILED
Result: hostbyte=DID_TIME_OUT driverbyte=DRIVER_OK
Nov 29 10:36:36 raspippa kernel: [39395.344789] sd 0:0:0:0: [sda] tag#0 CDB:
Read(16) 88 00 00 00 00 01 e1 20 4d 00 00 00 04 00 00 00
Nov 29 10:36:36 raspippa kernel: [39395.344813] blk_update_request: I/O error,
dev sda, sector 8071957760 op 0x0:(READ) flags 0x80700 phys_seg 128 prio class 0
According to this thread
(https://bugzilla.kernel.org/show_bug.cgi?id=202541) every kernel >=
4.20 is affected and there's still no patch in 5.3. I'll try to go back
to some 4.19.y kernel, I'm even prepared to lower the memory to 1 Gb,
cause so far this raspberry hasn't had more than a day of consecutive
uptime.
** Bug watch added: Linux Kernel Bug Tracker #202541
https://bugzilla.kernel.org/show_bug.cgi?id=202541
** Attachment added: "dmesg-raspippa-fresh-boot.txt"
https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1848703/+attachment/5308946/+files/dmesg-raspippa-fresh-boot.txt
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https://bugs.launchpad.net/bugs/1848703
Title:
Raspberry Pi 4 - USB Bus not detecting any devices
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