[ubuntu] CD/DVD Drive fails to recognize DVD-R

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http://ubuntuforums.org – I am running Ubuntu 9.04, dual-booting with Windows Vista. My problem is that I insert a blank DVD-R, but it doesn't come up - there is no CD icon that pops up, Brasero asks me to insert a medium, going to Place->Computer and clicking on the CD/DVD Drive yields the message "Unable to mount location; Can't mount file". I have no problem with CD-R/Ws, or reading DVDs. Under Vista, it DOES recognize the blank DVD-R, so I take it that it's an Ubuntu issue, and not a hardware one, but I may be wrong. (However, I posted here because it relates to hardware.) sudo lshw: *-cdrom description: DVD writer product: DVD+-RW SDVD8820 vendor: PHILIPS physical id: 1 bus info: scsi@1:0.0.0 logical name: /dev/cdrom logical name: /dev/cdrw logical name: /dev/dvd logical name: /dev/dvdrw logical name: /dev/scd0 logical name: /dev/sr0 version: AX03 capabilities: removable audio cd-r cd-rw dvd dvd-r configuration: ansiversion=5 status=ready *-medium physical id: 0 logical name: /dev/cdrom I would switch to simply using Vista to burn, but that doesn't solve the problem. Is this a bug? If anyone could help, it would be greatly appreciated. Thanks in advance. (Hardware)