when i try to burn a cd or whatever o get the message


medium or burner do not support writing at 2x speed
switching burn speed down to 0x



opc failed.probably the writer does not like the medium


any sugesstions please? what can i do?

here is the bug report



Manufacturer: SONY Corporation
Blocks total: 359849 Blocks current: 359849 Blocks remaining: 358042
Starting to write CD/DVD at speed 0 in real SAO mode for single session.
Last chance to quit, starting real write in 2 seconds.
1 seconds.
0 seconds. Operation starts.
Waiting for reader process to fill input buffer ... input buffer ready.
trackno=0
BURN-Free is OFF.
Turning BURN-Free on
Performing OPC...
/usr/bin/cdrecord: Input/output error. send opc: scsi sendcmd: retryable error
CDB: 54 01 00 00 00 00 00 00 00 00
status: 0x0 (GOOD STATUS)
cmd finished after 201.463s timeout 200s
/usr/bin/cdrecord: OPC failed.
Writing time: 205.628s
/usr/bin/cdrecord: fifo had 64 puts and 0 gets.
/usr/bin/cdrecord: fifo was 0 times empty and 0 times full, min fill was 100%.
BURN-Free was never needed.

thanks

Basically it doesn't like the make of disc(s) you are using. Try another brand.

You can try running k3b as root. But I agree different media is a good option. Some media discs just won't work with some writers.