How to enable 1366×768 screen resolution in ubuntu 16-04

It took me a while and some hacking until I figured out how to enable 1366×768 screen resolution in ubuntu 16-04 for my secondary display, a Fujitsu-Siemens TV from pre-HD era, means: HD ready but not providing the full resolution, just 1366×768.

Anyway, here is the magic:

cvt 1366 768 60
xrandr –newmode "1368x768_60.00"   85.25  1368 1440 1576 1784  768 771 781 798 -hsync +vsync
xrandr –addmode VGA-0 "1368x768_60.00"
xrandr –output VGA-0 –mode "1368x768_60.00"

This is sort of what distinguishes a linux system from a Windows system. Often you have to do a lot of weird hacking to achieve certain things.

Nevertheless, I must say, when I had Fedora 25 installed on my computer beforehand it offered 1368×768 screen resolution out of the box, ubuntu didn’t. Well, that’s what makes linux so exciting for many: the need to tinker and learn interesting technical, sometimes magical secrets.

Thanks to this internet articles I finally solved my problem:

“Resolution” in wiki.ubuntu.com

And again Windows 10 messed with my display driver …

And again today Windows 10 messed with my display driver …

Suddenly my screen turned black and after a couple of seconds my desktop came back, but a little later I realized that the ‘Sleep’ menu entry in the ‘Start’ –> ‘Power’ menu had been gone.

Running powercfg –a as recommended here revealed that the ‘Sleep’ capability had been disabled by my graphics driver. And checking my graphics driver revealed: it once more had been changed to ‘Microsoft Basic Display Adapter’.

I found 341.81-desktop-win10-64bit-international.exe in my download folder downloaded in October last year when this happened, ran it and let it re-install my NVIDIA graphics driver. I had to reboot – problem solved.

How often do you ask for help ?

This is about Gibbs’s Rule # 28: "When you need help, ask."

If you don’t know Gibbs you probably never watched the TV show “Navy CIS” ? This rule caught my attention when watching episode “Blood Brothers” recently.

How often do I ask for help when I need it ? Probably too seldom. Isn’t asking for help a sign of weakness ? Of course, not. Helping each other is what makes teams strong. But sometimes you hesitate to ask for help about something others would except you not to need any help for, right ? 

Saying “sorry” is a sign of weakness, according to Gibbs’s rules ( rule # 6 ). Is it ?

How to get shared folder to work with a virtual ubuntu in Virtualbox

Getting shared folder to work with a virtual ubuntu in Virtualbox is a bit of a nightmare.
Initially they simply can’t be accessed, even after re-installing Virtualbox guest add-ons.
The reason and solution is described here, but adding root account to group vboxsf didn’t work as well because of this problem: "usermod: cannot lock /etc/passwd; try again later.".

Thus, to summarize this mess, to make it work
# you have to reboot into recovery mode
# run this: mount -o remount,rw /
# then that: usermod -a -G vboxsf adminuser
# resume booting into normal mode

Problem solved.
Shared folders BTW can be found under /media.

Back from Nepal

Back from Nepal ! We successfully hiked the Manaslu Circuit and crossed Larka Pass ( 5200 m ). I returned home full of new experiences and awesome impressions. And with 2000+ photos.
I am starting to upload the best ones to my flickr album ‘Nepal 2016‘.

Ankunft in Kathmandu
"Ankunft in Kathmandu"

Nepal is a very different country to what I had been used to so far and I admit I was a bit scared also when starting the trip. But I adapted well and meanwhile I can imagine to return and see different regions like the Anapurna Range or the Everest.
Our hike took 14 days and started at Arughat Bazar ( 650 m ). For many days we followed the river Buri Gandaki: many steps up and down to get to swing bridges to cross the river again and again. 1

Stufen über Stufen
"Stufen über Stufen"

0 days later we stood on top of Larke Pass. I got a bit of a headache when we climbed from 3400 to 3800 m but after following the advice of our mountain guide to not lay down but walk instead and after drinking some more water and tea I was fine and did not have any problems further on.

Manistein unterhalb des Manaslu
"Manistein unterhalb des Manaslu"

This was when we had reached Samdo. The next day we made a steep climb on top of Samdo Reak ( 4800 m ). This made me getting weak knees but at the end I made it to the summit.
We found many nice lodges and tea houses on our way, a few of course had been not so nice. After we had crossed Larka Pass a highlight of the tour was a rest day at Bimtang where we had perfect sunny weather and were surrounded by a breathtaking mountain landscape. And the next day when we hiked down into the rhododendron forest was a highlight as well.

View down to Samdo
"View down to Samdo"

Before and after the hike we stayed several days in the Greenwich Village Hotel in Kathmandu und had the opportunity to visit many exciting places in Kathmandu, like Pashupatinath, the old city of Bhaktapur, Swayambunath where Buddhas Eyes overlook Kathmandu, and the large stupa in Bodnath, unfortunately under construction after the big earthquake one year ago.
It has been an unforgettable trip and adventure !

GW150914

When Albert Einstein passed away in 1955 he wasn’t sure anymore about the existence of Gravitational Waves, original predicted in 1916 on the basis of his theory of general relativity.

60 years later on September 14th, 2015, the LIGO ( Laser Interferometer Gravitational-Wave Observatory ) detectors in Hanford and Livingston registered a compression  strain of space by 10-19 meters, 1/10.000 times the diameter of a proton, through two 4 km long arms in which laser beams have been travelling back and forth 400 times, an event from now on becoming popular under its name GW150914. The event was caused by two black holes colliding 1.3 billion light years away from Earth, each having a solar mass of 30.

I always find it amazing what physicist discover these days and what complex machines they build to answer fundamental questions about the creation and existence of the universe. LIGO has cost 1.1 billion dollars and it took 40 years to build it.  Another even more famous example of such a machine is the Large Hadron Collider (LHC) built by scientists and engineers from 100 countries for 3 billion dollar – to discover the Higgs-Bosom, the last missing piece for the Standard Theory of particles.

I find it amazing what math they use and what conclusions they draw from the signals they measure, thoughts most human beings including myself never will be able to follow. They create the sort of knowledge we can only believe in, which often is just valid temporarily before it becomes overruled by new insights through even bigger and more complex machines and theories.

Source: bild der wissenschaft 4-2016

Best Screen Saver Ever

Who is as old as I am and remembers this ?


As I learned thru youtube there was actually a story built into that screen saver. As it played scenes randomly people never got to see the entire story, but someone compiled it and published the story on youtube as well: "Johnny Castaway: The story! "
Interesting comments can be found in youtube for the latter video, like

Quote:

I remember watching this on my computer when I was a child. I would wait for the computer to go to screen saver and watch it for hours. I miss this. Is there any link or download for Johnny?

or

Quote:

I remember working in a large computer companies support center when this screensaver was the hot thing! We’d have hundreds of PCs running it and we’d all shout and point to our friends when we’d see something new happening!!! There’s never been anything like it since.