Comment 0 for bug 1584509

This bug affects both the X64 and X32 bit versions of the latest ubuntu 16.04 it does not occur with ubuntu 15.10 or earlier. The problem is when a known good CD-R is placed in the drive, it is not mounted automatically. However, if it is a bootable CD-R and you select the boot option of the BIOS it will function normally.

Also, When a blank CD-R is inserted into the drive, it is mounted automatically, but disk creation software reports an erroneous amount of free space available. Such as 247 MB or 512 MB when the disk is a 700 MB disk. However, if you proceed to record to the disk, even with an ISO image greater than the supposed available capacity, it records just fine.

Other disk types such as DVD, audio, small cd-r work fine. This only seems to affect the larger, full size cd-r's

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-22-generic 4.4.0-22.40
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
 /dev/snd/controlC1: karl 1886 F.... pulseaudio
 /dev/snd/controlC0: karl 1886 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun May 22 14:38:13 2016
GvfsMonitorLog: Monitoring events. Press Ctrl+C to quit.
HibernationDevice: RESUME=UUID=03cb5141-d254-414a-950b-2235e068035a


InstallationDate: Installed on 2016-03-09 (73 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
MachineType: Gateway DX4380G
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic root=UUID=da27bf85-d849-43b8-a8f2-8fdac4f37784 ro quiet splash vt.handoff=7
 linux-restricted-modules-4.4.0-22-generic N/A
 linux-backports-modules-4.4.0-22-generic N/A
 linux-firmware 1.157
SourcePackage: linux
Symptom: storage
 monitor will print the received events for:
 UDEV - the event which udev sends out after rule processing
 Monitoring the udisks daemon. Press Ctrl+C to exit.
 14:38:31.725: The udisks-daemon is running (name-owner :1.96).
UpgradeStatus: No upgrade log present (probably fresh install) 09/04/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P11-A1 DX4380G
dmi.board.vendor: Gateway
dmi.board.version: 1.02
dmi.chassis.type: 3
dmi.chassis.vendor: Gateway
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP11-A1:bd09/04/2012:svnGateway:pnDX4380G:pvr:rvnGateway:rnDX4380G:rvr1.02:cvnGateway:ct3:cvr: DX4380G
dmi.sys.vendor: Gateway