Comment 3 for bug 1688920

I got the same dmesg output when using Startup Disk Creator to write an (L)ubuntu ISO image to a USB stick. After a very long time, and three such messages in the log, the disk creator finally claimed that it was complete. I'm not confident that the installation medium is actually OK, will try it shortly.

Details of the USB stick I used:
[12274.016048] usb 3-1.4: new high-speed USB device number 10 using xhci_hcd
[12274.142013] usb 3-1.4: New USB device found, idVendor=0951, idProduct=1665
[12274.142018] usb 3-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[12274.142021] usb 3-1.4: Product: DataTraveler 2.0
[12274.142024] usb 3-1.4: Manufacturer: Kingston
[12274.142027] usb 3-1.4: SerialNumber: 50E549C20210BE8059BC09A9
[12274.167999] usb-storage 3-1.4:1.0: USB Mass Storage device detected
[12274.168534] scsi host3: usb-storage 3-1.4:1.0
[12275.275617] scsi 3:0:0:0: Direct-Access Kingston DataTraveler 2.0 PMAP PQ: 0 ANSI: 6
[12275.276767] sd 3:0:0:0: Attached scsi generic sg1 type 0
[12276.083697] sd 3:0:0:0: [sda] 15335424 512-byte logical blocks: (7.85 GB/7.31 GiB)
[12276.084529] sd 3:0:0:0: [sda] Write Protect is off
[12276.084547] sd 3:0:0:0: [sda] Mode Sense: 23 00 00 00
[12276.085363] sd 3:0:0:0: [sda] No Caching mode page found
[12276.085386] sd 3:0:0:0: [sda] Assuming drive cache: write through
[12276.127850] sda: sda1
[12276.131198] sd 3:0:0:0: [sda] Attached SCSI removable disk