Did you try the options in:
File Manager PCManFM > Edit > Preferences > Volume Management > Auto-mount
Unlike all previous versions, 7.6 doesn't automatically mount CDs. I have to type "mount /media/sr0".
Did you try the options in:
File Manager PCManFM > Edit > Preferences > Volume Management > Auto-mount
That doesn't help.
Ok, found the problem. You have to add kernel option:
block.events_dfl_poll_msecs=1000
Looks like a strange command to me but if it works ...
Looks to me like more Linux gibberish. Sure, Linux experts enjoy saying to noobs "you just have to add a kernel option". It certainly demonstrates their superiority and better understanding. But many average users have no idea exactly how you "add a kernel option". It isn't hard to understand why Linux is still marginalized on the desktop.
---
Verifying of md5 checksum and burning a CD at slow speed are important.
At least it's an easy fix, just add it to syslinux.cfg (assuming your knoppix is on a USB stick).
My Knoppix 7.7.0 is a LiveUSB on a Dell Inspiron which has a r/w cd/dvd drive in it.
This implies legacy boot and a remote possibility of systemd messing with things.
I was surprised that cds were not always being recognized, along with other media.
However, I finally noted that, for my set-up anyway, a cd physically in place
in the cd drive reader during boot will be recognized, whereas a cd added after boot
will not be recognized.
So, one work-around for Knoppix 7.7.0 LiveUSB legacy boot users is simply just to
re-boot with the cd in place. I would not be surprised that this problem and work-
around might apply to earlier Knoppix LiveUSBs as well, but I haven't checked this out.
Vintage DEC/CLEARPOINT INC. -QRAM-2 SAB-1 1MB Q-BUS MEMORY MSV11-QA (B2)
$129.99
DEC PDP 8/M PDP 8M / 4 avail / Vintage Digital Equipment Corp /Also DEC PDP 12
$5775.00
10x Rare Vintage DEC 12-22246-01 VAX BI TRANSITION HEADER ALL 3 BLOCKS INSTALLED
$219.95
DEC DIGITAL Equipment Corp VT220-D2 Vintage CRT Terminal
$215.00
Vintage DEC / DIGITAL CLEARPOINT INC COMPUTER BOARD QRAM-11 QBUS Memory PQ
$109.00
Vintage DEC Digital Equipment VT100 Keyboard 70-14653-11 Missing Key Caps
$129.00
Vintage DEC Digital RX 180 AB Dual 5.25" Disk Drive
$149.00
$47.00
Vintage DEC/The Redac mini cabinet front panel Digital Equipment Corp. 19"
$269.99
VINTAGE DEC Digital RK11-D DISK CONTROL M7255 PDP 11 (B1)
$129.99