Sound problems on Ubuntu 18.04 LTS

[ian]

On 2020-01-21 17:52, Colin Law wrote:
> If you boot off a live ubuntu image does the sound work?

Can't boot from the DVD I burned last night. Not sure why.

I burned an 18.04.3 iso on my Mac last night using right-click on Ubuntu iso -> burn.

1. My Mac reported that the DVD was written successfully but was then not able to read it. I don't *think* this has happened before.

2. Took the DVD to work, inserted it in my Ubuntu machine. Not recognized. Even weirder, nor is the DVD that I installed the system from (but my Win10 laptop can).

3. The Ubuntu system *will* read a CD of Clonezilla.

Here's the output of  hwinfo --cdrom
20: SCSI 101.0: 10602 CD-ROM (DVD)
   [Created at block.249]
   Unique ID: KD9E.4TwT4ua8IW0
   Parent ID: w7Y8.6y_WM93WQ6C
   SysFS ID: /class/block/sr0
   SysFS BusID: 1:0:1:0
   SysFS Device Link: /devices/pci0000:00/0000:00:1f.2/ata2/host1/target1:0:1/1:0:1:0
   Hardware Class: cdrom
   Model: "HL-DT-ST DVDROM DH16NS30"
   Vendor: "HL-DT-ST"
   Device: "DVDROM DH16NS30"
   Revision: "1.00"
   Driver: "ata_piix", "sr"
   Driver Modules: "ata_piix"
   Device File: /dev/sr0 (/dev/sg1)
   Device Files: /dev/sr0, /dev/cdrom, /dev/disk/by-id/ata-HL-DT-ST_DVDROM_DH16NS30_K689BM54800, /dev/disk/by-path/pci-0000:00:1f.2-ata-2, /dev/dvd
   Device Number: block 11:0 (char 21:1)
   Features: DVD
   Drive status: no medium
   Config Status: cfg=new, avail=yes, need=no, active=unknown
   Attached to: #1 (IDE interface)
   Drive Speed: 48

Am I missing a DVD mounting component?

thanks

ian