I inserted the cd-r in cdrom and it appears under Disks and Devices section in the tool bar. I can also see it in left panel in dolphin and browse the contents in the cd.
On running following commands the outputs are shown inline:
Code:
❯ blkid 
/dev/sr0: BLOCK_SIZE="2048" UUID="2008-06-30-10-58-00-0" LABEL="Rudra Kawach" TYPE="iso9660"
Code:
❯ sudo lshw -c disk 
[sudo] password for sanchit:  
  *-disk                     
       description: ATA Disk 
       product: ST500LT012-1DG14 
       physical id: 0 
       bus info: scsi@0:0.0.0 
       logical name: /dev/sda 
       version: SDM1 
       serial: SBY09YN5 
       size: 465GiB (500GB) 
       capabilities: gpt-1.00 partitioned partitioned:gpt 
       configuration: ansiversion=5 guid=b5ae8edf-9ea8-435a-b410-c147b32cdcd7 logicalsectorsize=512 sectorsize=4096 
  *-cdrom 
       description: DVD-RAM writer 
       product: DVD+-RW SU-208GB 
       vendor: TSSTcorp 
       physical id: 1 
       bus info: scsi@1:0.0.0 
       logical name: /dev/cdrom 
       logical name: /dev/sr0 
       version: D100 
       capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram 
       configuration: ansiversion=5 status=ready 
     *-medium 
          physical id: 0 
          logical name: /dev/cdrom
But on subsequent inserts, the behavior is pretty inconsistent. Sometimes it is not detected by cdrom and won't appear in output of sudo lshw -c disk

Code:
❯  
  *-disk                     
       description: ATA Disk 
       product: ST500LT012-1DG14 
       physical id: 0 
       bus info: scsi@0:0.0.0 
       logical name: /dev/sda 
       version: SDM1 
       serial: SBY09YN5 
       size: 465GiB (500GB) 
       capabilities: gpt-1.00 partitioned partitioned:gpt 
       configuration: ansiversion=5 guid=b5ae8edf-9ea8-435a-b410-c147b32cdcd7 logicalsectorsize=512 sectorsize=4096 
  *-cdrom 
       description: DVD-RAM writer 
       product: DVD+-RW SU-208GB 
       vendor: TSSTcorp 
       physical id: 1 
       bus info: scsi@1:0.0.0 
       logical name: /dev/cdrom 
       logical name: /dev/sr0 
       version: D100 
       capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram 
       configuration: ansiversion=5 status=nodisc
Other times the disc is detected, but the block identification (blkid) shows nothing.

This inconsistent behavior is weird. Any clues what might be going wrong?