An engineer's life around Kyoto

I have not paid a little effort on power-saving setting of my laptop machine, but I finally made it to some extent. After searching around the web pages, the article on the https://forums.bunsenlabs.org/viewtopic.php?id=1920 page reminded me of laptop-mode-tool package and tried it. At first, I installed laptop-mode-tool, rebooted and launched the powertop . The following screen capture is its screen: PowerTOP 2.6.1    Overview   Idle stats   Frequency stats   Device stats   Tunab >> Bad           Wireless Power Saving for interface wlan0                         Bad           Enable Audio codec power management    Bad           Enable SATA link power management for host0    Bad           Enable SATA link power management for host1    Bad           Enable SATA link power management for host2    Bad           Enable SATA link power management for host3    Bad           NMI watchdog should be turned off    Bad           VM writeback timeout    Good          Autosuspend for u

I own an old printer, Canon LBP-350. It has both parallel port and USB port, but I never have been able to use it through USB port regardless of several trials. Because my one-year-old main desktop PC with Debian Jessie does not have a parallel port and direct USB connection seems hopeless, I recently bought a USB to Paralell-port convertor. How wonderful, it IS a cable. It has no extra power supply input nor a box at the intermediate location of the cable. I connect the printer and the PC with a little bit peculiar feeling and booted the printer and the PC. Then I opened the system-config-printer panel on the XFCE4 desktop. LBP-350 had already appeared. But the printer was set to inactive state. I couldn't figure out the reason, but I went on. I opened the URL http://lcoalhost:631 and looked into the CUPS administrative page. Yes, the printer was there. I changed the status of the printer to active and pushed the test-page button and the printer printed it. It was not a

I have been using MATE desktop environment on my laptop PC since my installation of Debian Jessie. Shortly, I noticed that Emacs M-< and M-> wouldn't work. Since then, I have managed to use the Emacs using ESC key instead of the Alt key as the Meta key. After one year of inconvenient use, I finally find what intercepts the Shift - Alt key. It is keyboard layout switching function of MATE. Here is the screenshot of its setting panel: My next question: Are MATE users happy with this default setting?