Dear Schily,
I just bought a Yokkao USB-3 DVD drive from Amazon/China
<https://www.amazon.com/gp/product/B01EMXQBLM>. It failed to burn a
DVD+R with cdrecord 3.01 -- a version I have used countless times with
other DVD drives. It also failed with 3.02.
However, the hardware worked perfectly with the xfburn tool that
evidently comes with Xubuntu 16.04, and I verified the resulting DVD;
it really did work.
Obviously, I would prefer to use cdrecord rather than xfburn. I'm
attaching the output of the cdrecord 3.02 session FYI.
All best wishes,
Steve Newcomb
# cdrecord dev=/dev/sr0 -v /nobackup/ub[?5h[?5luntu-16.04.1-server-amd64.iso
cdrecord: No write mode specified.
cdrecord: Assuming -sao mode.
cdrecord: If your drive does not accept -sao, try -tao.
cdrecord: Future versions of cdrecord may have different drive dependent
defaults.
Cdrecord-ProDVD-ProBD-Clone 3.02a06 (x86_64-unknown-linux-gnu) Copyright (C)
1995-2016 Joerg Schilling
TOC Type: 1 = CD-ROM
scsidev: '/dev/sr0'
devname: '/dev/sr0'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.9'.
SCSI buffer size: 64512
atapi: 1
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'TSSTcorp'
Identifikation : 'DVD+-RW TS-L633C'
Revision : 'DW20'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
Current: DVD+R
Profile: DVD-R/DL sequential recording
Profile: DVD+R/DL
Profile: DVD+R (current)
Profile: DVD+RW
Profile: DVD-RW sequential recording
Profile: DVD-RW restricted overwrite
Profile: DVD-RAM
Profile: DVD-R sequential recording
Profile: DVD-ROM
Profile: CD-RW
Profile: CD-R
Profile: CD-ROM
Profile: Removable Disk
Using generic SCSI-3/mmc-3 DVD+R driver (mmc_dvdplusr).
Driver flags : NO-CD DVD MMC-3 SWABAUDIO BURNFREE
Supported modes: PACKET SAO
Drive buf size : 1439744 = 1406 KB
cdrecord: Warning: Cannot read drive buffer.
cdrecord: Warning: The DMA speed test has been skipped.
FIFO size : 4194304 = 4096 KB
Track 01: data 667 MB
Total size: 667 MB = 341504 sectors
Current Secsize: 2048
Blocks total: 2295104 Blocks current: 2295104 Blocks remaining: 1953600
Reducing transfer size from 64512 to 32768 bytes.
resid: 60
resid: 28
Starting to write CD/DVD/BD at speed 8 in real SAO mode for single session.
Last chance to quit, starting real write in 9 seconds. 8
seconds. 7 seconds. 6 seconds. 5
seconds. 4 seconds. 3 seconds. 2
seconds. 1 seconds. 0 seconds. Operation starts.
Waiting for reader process to fill input buffer ... input buffer ready.
resid: 60
Starting new track at sector: 0
Track 01: 0 of 667 MB written.cdrecord: Input/output error. write_g1: scsi
sendcmd: no error
CDB: 2A 00 00 00 00 00 00 00 10 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 05 00 00 00 00 0A 00 00 00 00 21 02 00 00
Sense Key: 0x5 Illegal Request, Segment 0
Sense Code: 0x21 Qual 0x02 (invalid address for write) Fru 0x0
Sense flags: Blk 0 (not valid)
resid: 32768
cmd finished after 2.275s timeout 200s
write track data: error after 0 bytes
cdrecord: The current problem looks like a buffer underrun.
cdrecord: Try to use 'driveropts=burnfree'.
cdrecord: Make sure that you are root, enable DMA and check your HW/OS set up.
Writing time: 36.632s (00:00:36.632)
Average write speed 13.8x.
Fixating...
operation 0% done
^Ccdrecord: Caught interrupt.
cdrecord: fifo had 129 puts and 2 gets.
cdrecord: fifo was 0 times empty and 1 times full, min fill was 99%.
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