[Bug 1654392] [NEW] growisofs -speed parameter has no effect

[Travisgevans]

Public bug reported:

growisofs apparently ignores the -speed parameter when burning a DVD ISO
regardless of the given value or the supported writing speeds.

———
$ dvd+rw-mediainfo /dev/dvd
INQUIRY:                [HP      ][DVD Writer 1270d][GH24]
GET [CURRENT] CONFIGURATION:
 Mounted Media:         1Bh, DVD+R
 Media ID:              MBIPG101/R05
 Current Write Speed:   16.0x1385=22160KB/s
 Write Speed #0:        16.0x1385=22160KB/s
 Write Speed #1:        12.0x1385=16620KB/s
 Write Speed #2:        8.0x1385=11080KB/s
 Write Speed #3:        6.0x1385=8310KB/s
 Speed Descriptor#0:    00/2295103 R at 16.0x1385=22160KB/s W at 16.0x1385=22160KB/s
READ DVD STRUCTURE[#0h]:
 Media Book Type:       00h, DVD-ROM book [revision 0]
 Legacy lead-out at:    2295104*2KB=4700372992
READ DISC INFORMATION:
 Disc status:           blank
 Number of Sessions:    1
 State of Last Session: empty
 "Next" Track:          1
 Number of Tracks:      1
READ TRACK INFORMATION[#1]:
 Track State:           blank
 Track Start Address:   0*2KB
 Next Writable Address: 0*2KB
 Free Blocks:           2295104*2KB
 Track Size:            2295104*2KB
 ROM Compatibility LBA: 270336
READ CAPACITY:          0*2048=0


$ growisofs -speed 12 -dvd-compat -Z /dev/dvd=dvd1.iso
Executing 'builtin_dd if=dvd1.iso of=/dev/dvd obs=32k seek=0'
/dev/dvd: "Current Write Speed" is 16.4x1352KBps.
          0/4621449216 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/4621449216 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
[…]
 4328620032/4621449216 (93.7%) @15.6x, remaining 0:20 RBU 100.0% UBU  99.3%
 4393402368/4621449216 (95.1%) @14.0x, remaining 0:16 RBU 100.0% UBU  99.3%
 4466507776/4621449216 (96.6%) @15.8x, remaining 0:10 RBU 100.0% UBU  99.0%
 4527161344/4621449216 (98.0%) @13.1x, remaining 0:06 RBU 100.0% UBU  15.4%
 4601151488/4621449216 (99.6%) @16.0x, remaining 0:01 RBU  60.5% UBU  99.0%
builtin_dd: 2256576*2KB out @ average 10.4x1352KBps
/dev/dvd: flushing cache
/dev/dvd: closing track
/dev/dvd: closing disc
/dev/dvd: reloading tray
———

Same result with -speed=8 or -speed 8:  Instead of using the specified
speed (listed as supported by dvd+rw-mediainfo), it uses 16x instead.

With the same media and drive, setting speed *does* when using wodim
(e.g., `wodim -v -dao speed=8 dvd1.iso` does write at 8x), so it isn't
simply a drive/media issue.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: growisofs 7.1-11
ProcVersionSignature: Ubuntu 4.4.0-43.63-generic 4.4.21
Uname: Linux 4.4.0-43-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Thu Jan  5 14:31:16 2017
Dependencies:
 gcc-5-base 5.4.0-6ubuntu1~16.04.4
 gcc-6-base 6.0.1-0ubuntu1
 libc6 2.23-0ubuntu4
 libgcc1 1:6.0.1-0ubuntu1
 libstdc++6 5.4.0-6ubuntu1~16.04.4
InstallationDate: Installed on 2016-04-11 (268 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: dvd+rw-tools
UpgradeStatus: Upgraded to xenial on 2016-04-26 (254 days ago)

** Affects: dvd+rw-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1654392

Title:
  growisofs -speed parameter has no effect

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