Schlagwort: Bug

Ubuntu Upgrade Bug: do-release-upgrade breaks cups wrapper filter files for Brother Laser Printers

If you upgrade ubuntu 18.04 to 22.04 via „do-release-upgrade“ and you have installed brother laser printer drivers, the whole „cups“ printing system will FAIL on print and log missing „filters“ at cups log. The „lp“ printer output piped into nirvana! Check at  /usr/lib/cups/filter/ for the filter files Reinstalls cups by deinstall/reinstall with –purge config option Check again  /usr/lib/cups/filter/ Copy all „brto*“ missing filter files from other old working PC to  /usr/lib/cups/filter/ Restart PC, cups works now. The Filter files are not inside Brother Driver Packages (deb)! Seen on a Systems with Ubuntu Small/Mini Setup! I will check next days this […]

Bug: virt-manager NO Keyboard input on VM

If you use Debian as Host System for Virtual Servers the „virt-manager“ Package is broken! no keymap input no VM Console Control no VT-Switch possible Fix: run sudo virsh edit "vm-name" remove all „spice“ display + audio entrys !! open sudo virt-manager go details  and and ADD Display VGA + VGA-Adapter select VNC!! save + exit settings.. reboot VM now you should be able to enter the login commands

Ubuntu Debian MAJOR Bug: WIFI randomly disconnected at 100% Signal no internet

Ubuntu Debian (All Linux OS) Bug: WIFI randomly disconnected at 100% Signal no internet System : ubuntu 18.04 LTS Kernel 5.7 amd64 Router openwrt LAN/WIFI: disabled ipv6 dhcp ! Bug: Wifi lost internet connection randomly on 100% Signal beside the Gateway-Router! Problem: No Error Logs, no Kernel Messages Tested: Replaced Mini-PCI WIFI 5/6 Cards various Brands ATH9/Intel no fix!! Replaces Drivers and Power Off Powermanagement of PCI-WIFI! no fix! Solution: edit /etc/sysctl.conf insert: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 Bug Background Info: dhcp6 daemon got a expire time of IP Address but fails to renew the handshake […]

Bug: AVM Router Repeater Mesh Stream Problems

Since latest Updates of AVM Router Firmware the Devices are sold with MESH Option but this FAILS! Background: Mesh should handle the best Connect between Router + Repeater and used Devices Mesh Service produces own Communication Traffic which is added to your default WIFI TRAFFIC! The Repeaters do NOT offer 3 or 4 seperated WIFI NICs for handling the Traffic If you buy new Repeaters look that they have minimum 4 Channels (2,4+5GHZ to Router and 2,4+5GHZ to the Devices like TV,Laptop and more.. If you have LAN Cables next to the Repeaters, you should prefer at the Repeater LAN-to-WIFI […]

WordPress Gutenberg Editor fails on modsecurity2

If you use modsecurity2 Plugin Filter on a Apache2 / Apache24 Setup then on my Blogs Gutenberg fails to SAVE Pages and Drafts. Workaround: Install the old but useful „Classic Editor Plugin“ and replace Gutenberg for all Users! Background: It seems the lastest stable mod_security2 Rules not modified for Gutenberg post urls!

Major Bug: UFW stopped thru logrotate

On Debian Sid i have seen that ufw service is stopped on logrotate!! Its a bad known bug! Workaround: Set all Services like Dovecot, Postfix to listen on LOCALHOST (127.0.0.1) if not needed over Internet Enable ONLY encrypted AUTH (Login) to Postfix! (TLS 1.2) Disable unneeded Services ! like Samba, FTP… move config from /etc/logrotate.d/ufw to /root/ to disable ufw logrotate !! edit /etc/ufw/ufw.conf set LOGLEVEL to „off“ restart the Server and check open Ports next Days from outside with: $sudo nmap -PN my.server.com

Nextcloud Owncloud Calling Home

I did a deeper firewall test on my fresh installed OpenWRT Router and activated a „Ads Blacklist“ after this my owncloud Share Login loops! Result: Seems that some IP’s of the „Update Check Tool“ Servers, which is installed inside the PHP-Kit is blacklisted. So it seems the Code calls home!  With this option its possible to count and collect IPs of Setups! Perhaps checkout unpatched Versions! I didn’t check deeper, but the behavior was clear without viewing the codes. After publish this Info via Twitter:   REMARKS: No Company / Developer works for „free“ After Setup of PHP-Kits do a […]

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