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1) The ext2 persistent home bug (ext2 partitions not recognized properly)
is still not fixed in 5.01, because of a a typo in the knoppix-autoconfig file:
wrong:   ext3|ext3|reiserfs|xfs) MOUNTOPTS="$MOUNTOPTS,noatime" ;;
correct: ext2|ext3|reiserfs|xfs) MOUNTOPTS="$MOUNTOPTS,noatime" ;;
Please find a diff in here:
BTW, I found a work around fix, cf:
Gilles van Ruymbeke
2)knoppix splash cheatcode doesn't work, it worked with 4.0.2 version.
3)difficulty to boot on some (recent) laptop: needs to use noudev and sometimes 
  nompcmcia to start, but Konsole failed start, complain that no tty are available.

WORKAROUND: On a PB laptop, I manage to start without passing noudev, progress bar of autoconfiguring devices don't stop but by key pressing [CTRL c] twice, boot process continue. After an HD install, need to put rt2500usb in blacklist

4)boot process is horribly slow if a pci card with rt2500 WLAN chipset is plugged 
  and failed on DHCP request, no problem on Cebit 5.0: card is well recognise.
5)printing impossible (report from forums.knoppix-fr.org)
6)module compilation is not possible (out of the box), have to have a look deeply 
 (maybe problem with header or some links to them)
  Some more info: This is probably related with the Debian bug #368544 as the parts missing 
in the headers are those supposed to be in a newcomer linux-kbuild package
7)[INSTALL] mount with removable media, 
"Please change the -u knoppix and -g knoppix in
/etc/udev/knoppix.rules, either to match the "primary user", or just
remove them." 
Klaus KNOPPER on debian-knoppix ML
-In: http://www.knoppix.net/wiki/Bugs/5.0DVD is solved
-Number 10 ;)
Jaime Ortega (jortega)
8) CD-Burning with an external USB device is broken.
as i posted in the forum  http://www.knoppix.net/forum/viewtopic.php?t=24784
there are some messages from cdrecord in the k3b failure report 
about missing entrys in /dev one of them about /dev/sg0 ... 
i looked for what was there in 4.0.2CD and found this:

ll /dev/sg*
crw-rw-rw-  1 root root 21,  0 2001-08-24 01:32 /dev/sg0
crw-rw-rw-  1 root root 21,  1 2001-08-24 01:32 /dev/sg1
crw-rw-rw-  1 root root 21, 10 2001-08-24 01:32 /dev/sg10
crw-rw-rw-  1 root root 21, 11 2001-08-24 01:32 /dev/sg11
crw-rw-rw-  1 root root 21, 12 2001-08-24 01:32 /dev/sg12
crw-rw-rw-  1 root root 21, 13 2001-08-24 01:32 /dev/sg13
crw-rw-rw-  1 root root 21, 14 2001-08-24 01:32 /dev/sg14
crw-rw-rw-  1 root root 21, 15 2001-08-24 01:32 /dev/sg15
crw-rw-rw-  1 root root 21, 16 2001-08-24 01:32 /dev/sg16
crw-rw-rw-  1 root root 21,  2 2001-08-24 01:32 /dev/sg2
crw-rw-rw-  1 root root 21,  3 2001-08-24 01:32 /dev/sg3
crw-rw-rw-  1 root root 21,  4 2001-08-24 01:32 /dev/sg4
crw-rw-rw-  1 root root 21,  5 2001-08-24 01:32 /dev/sg5
crw-rw-rw-  1 root root 21,  6 2001-08-24 01:32 /dev/sg6
crw-rw-rw-  1 root root 21,  7 2001-08-24 01:32 /dev/sg7
crw-rw-rw-  1 root root 21,  8 2001-08-24 01:32 /dev/sg8
crw-rw-rw-  1 root root 21,  9 2001-08-24 01:32 /dev/sg9

after creating /dev/sg0 with mknod ( using mknod without beeing absolutely sure 
what you are doing can lead to deleting all your data on harddisk or even worse )
at least k3b simulation started working ... 
i will do a real burning test later ...
:Ralph.Bremer 20:34, 5 Jul 2006 (GMT)
9) ipw2200 v1.1.1 (the one in kernel 2.6.17) relies on firmware 3.0 while 
the Knoppix package ipw2200-nonfree only contain older firmwares. 
Please update ipw2200-nonfree, cf 
10) Setting the timezone does not work. KDE's time applet requires the root
password (should probably use ksudo instead). 

Workaround: sudo vi /etc/timezone, sudo cp /usr/share/zoneinfo/Continent/City /etc/zoneinfo.

11) Mounting of a PCMCIA flash drive works only once. After remove/insert of the card, 
the following error message appears: "mount:Gerätedatei /dev/hde1 existiert nicht" (rol).
12) Improvement: the CD and DVD editions miss the p7zip package.
If you compress a tar archive of the Knoppix root filesystem, the result
is 20% smaller than the one produced by bzip2. Definitely useful!
13) Improvement: the CD and DVD editions miss the ccache package
(102 KB install size). This compiler cache is the best way to recompile
big projects (like the Linux kernel) in a much faster way.
14) To use SD cards it currently is necessary to manually modprobe mmc_block.
15) Improvement: If possible include new ipw3945 WLAN module.
16) I use a working CD (tested on other computers). On my computer, Knoppix stops 
with the message "can't find KNOPPIX filesystem, sorry, dropping you to a (very 
limited) shell..", just as the bug 15 of Knoppix 5.0DVD. Anyway the boot option
nodma does not make things work. I have found no workaround. I have got a SATA
CDROM/DVD drive (Plextor 712SA).
16b?) Can't burn, and DVD-reader access are very slow on laptop with ICH6 SATA controler

Workaround (after HD install):

echo "options libata atapi_enabled=1" > /etc/modprobe.d/libata

mkinitramfs -o /boot/initrd.img-2.6.17-test

Then modify your boot config (/boot/grub/menu.lst for grub) to adapt your initrd like: initrd /boot/initrd.img-2.6.17-test

And add to your kernel options (append):


17) X won't work on some systems when using Knoppix CD 5 or Knoppix CD 4.
Tried on five different systems, three notebooks, two desktop systems,
but xorg's X failed to start and complained about missing files. Integrity
of CD tested and okay.
18) In KNOPPIX_V5.0.1CD-2006-06-01-DE.iso (MD5 checked OK) *boot/isolinux/isolinux.bin
is corrupt or hash is wrong in md5sums file. 
19) Apache2 returns "Partial Content" when accessing a local ( page.
Small files works, larger files (> Mtu ??) not. 
See http://www.knoppix.net/forum/viewtopic.php?t=25639
20)(may be the same as 1): Knoppix 5.0.1, English CD download, failed to mount the hard drives on a Dell Dimension 5100, which has a second  SATA hard drive installed for backup. It worked fine if I disabled the second hard drive from the BIOS setup.

James Wimberley 9/10/2006

21) (same as 3): Knoppix 5.0.1, English CD download, failed to boot on an HP Pavilion zv5120us laptop, unmodified except for extra memory. The hangup was on the fourth line, "looking for CD in /dev/hdc". Knoppix 4.0 boots fine on the same machine. The copy of 5.0.1 should be OK as it boots on the Dell, see 20.

James Wimberley 9/10/2006

22) The !cal command does not work in a continuous manner. In fact it works about
40% - 60% of the time when done consecutively. !ls and !top work without issue, but
there seems to be a glitch in the !cal command when using the Knoppix 5.0.1 CD.
23) Notebook IBM Thinkpad T40: ipw2200 does not work due wlan-card firmware upload failure.
24) The persistent home bug: i have hdd with 2 partitions (hda1 - ntfs, hda5 - fat32). if on both partitions file knoppix.img exists, but on hda1 this file is broken(all zero) - then i can't use /dev/hda5/knoppix.img too due knoppix-autoconfig error: wenn one file was found, but broken, script will skip all other knoppix.img.
25) in autoconfig-script es is not enough fehler messages (knoppix-image: no message by broken(zero) file knoppix.img)
26) the KDE internet modem dialer, 'kppp',  appears to be broken, 
and can't find my serial modem, even when running as root. 

A partial solution is to use the ?debian? 'pon' , 'pof' and 'pppconfig' scripts from the shell. --gh78

26) The touchpad bugs are still there.
Double clicks and 'dragging' don't register on my dell latitude touchpad.

The solution is to pass 'psmouse.proto=imps' to the kernel. This can be done at the CD cheatcode prompt. It would be nice if it was programmed in by default. --gh78

27) Running '/etc/init.d/ssh stop' doesn't seem to actually stop sshd. I have to kill the process manually to stop the ssh server.