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compiling - Problematic installation (compilation) of OpenCV 3.1.0 in Ubuntu 16.10 - Ask Ubuntu

i trying install opencv 3.1.0 library , getting error after run make : in file included /usr/include/c++/6/ext/string_conversions.h:41:0, /usr/include/c++/6/bits/basic_string.h:5402, /usr/include/c++/6/string:52, /usr/include/c++/6/bits/locale_classes.h:40, /usr/include/c++/6/bits/ios_base.h:41, /usr/include/c++/6/ios:42, /usr/include/c++/6/ostream:38, /home/alex/opencv/opencv/modules/ts/include/opencv2/ts/ts_gtest.h:55, /home/alex/opencv/opencv/modules/ts/include/opencv2/ts.hpp:28, /home/alex/opencv/opencv/build/modules/core/perf_precomp.hpp:12: /usr/include/c++/6/cstdlib:75:25: fatal error: stdlib.h: no such file or directory #include_next <stdlib.h> i have tried numerous times (re)install different versions of libstdc++ , thinking problems stems here , have double checked needed dependencies, no avail. i have looked in /usr/include/c++/6/ folder , fil...

Unusual boot behavior (16.04) - Ask Ubuntu

whilst starting ubuntu 16.04 encounter same set of issues.. first attempt: i'll hit power button, after hitting 'ubuntu' grub. second attempt: once again make past bios we'll hit decrypt key phase; keyboard, , other usb devices become unresponsive if they've been disconnected. the way may startup computer entering recovery mode. when i'm logged in things such wallpaper, , desktop items reset. ideas?

kernel - Fresh Install of 16.10 results in CPU cores running less than normal - Ask Ubuntu

installed 16.10 server on ibm 3650 m3 2 quad core xeon e5630 processors. server runs 16 compute intensive apps driving each core 100%. after install of 16.10, cores (maybe 2 or 3) run @ 100% others fail exceed 50% length of time. system avgs 100% busy everyday after 16.10 install, ran @ 50%. top showed 51% busy , 49% idle 16 jobs running. fell 16.04 , 16 jobs ran normally, driving each core 100%. suspect there might possible cpu firmware problem in 4.8 kernel. else encountered issue. btw, 16.10 installed on other cpu models e55xx , i5 series don't seem have problem. else encountered issue?

unity tweak tool - Toggle Desktop Through Hotcorners - Ask Ubuntu

i trying toggle desktop going lower left corner. used hotcorners unity tweak tool setting corner "toggle desktop" doesn't work. other functions corner work should though. why happening? if have other alternatives succeed feel free mention them.

Ubuntu 16.04 doesn't handle Macbook keyboard - Ask Ubuntu

i installed ubuntu 16.04 on macbook pro yesterday , today noticed key right below esc isn't correct. should produce ` , ~ (which under os x), produces < , >. haven't tested whole keyboard, don't know if there others. there way fix without reinstalling ubuntu? here's fix worked macbookpro 12,1 (retina) on xubuntu 16.04 lts "xenial" running kernel 4.8.0-51 generic back before editing: nano /usr/share/x11/xkb/symbols/pc comment out key <lsgt> { [ less, greater, bar, brokenbar ] }; and add key <lsgt> { [ grave, asciitilde, grave, asciitilde ] }; apply change rm -rf /var/lib/xkb/* logout/login. thanks timofey ( source here )

16.04 - Unable to ssh into a machine unless on the same network - Ask Ubuntu

i trying ssh home laptop(ubuntu 16.04), on private network, ip 10.12.x.x, work machine, @ university network, ip 10.100.x.y, running ubuntu 16.04. i unable establish connection , "connection timed out" message. if try ssh when laptop on same network work computer,it works flawlessly. any thoughts why happens? you can't connect private network outside. university have give public ip machine want connect to. have handle port forwarding end send desired traffic (ie specific ports) machine. the same goes if want connect home computer university. home computer on router. have connect public ip (most ip of router or provide modem ip) have traffic forwarded private ip of computer. the options in modem's setup port forwarding in firewall or security section. companies allow outside networking , connecting computers provide vpn (virtual private network) connectivity provide remove facilities ip of vpn can connected on same network different location...

live usb - Confused about booting from USB, beginner questions - Ask Ubuntu

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i'm new of , had few questions. i'm looking run ubuntu directly 128gb usb 3.0 flash drive. read ubuntu page creating bootable usb stick windows 10 using rufus usb installer. guide should follow? i have relatively new laptop has advanced boot options boot via usb. end goal here have ubuntu installed on usb stick. don't want use vm , don't want try dual boot, or wipe windows install. want ubuntu installed on pc, run usb. guide for? i've installed ubuntu before on old laptop bought friend years ago. remember when did used usb drive, didn't make bootable drive. had options install alongside windows, on windows , try before install. i want os, data, working directories, etc located , run usb. when unplug don't want have trace of on laptop. want keep 2 separate. church , state, speak. is bootable usb stick option using rufus or should go vm? in advance! when run ubuntu installer (as windows installer), have option of choosing drive , partitio...