Beware of over / under clocking
There is no question that over and under clocking could cause system instability that could lead either to loose of data or system hangs, so why write about this? Because system stability, as I found hard way, is also OS specific.
Common way to decrease system power usage is undervolting components so that way, even thought they do operate within same spec, they do use less power to do so. Less power equals to less heat being generated, so this also helps to decrease component temperature a bit.
Read the rest of this entry »sTRX4 Linux RAID driver
Switching from Intel HEDT to AMD HEDT, to be more precise from Intel i9-7900X to Threadripper 3960X was enjoyable experience. More then double the core count, very attractive pricing (relatively) and support for more recent technologies. Code compile is just flying …
Unfortunately not all aspects of new platform are smooth sailing and main problem is with driver side on Linux. Using RAID on Linux is practically impossible due to … lack of driver.
Arduino Nano 33 BLE infinite loop upload issue
While working on code it’s common to make mistakes, but some mistakes are more severe than other.
I was playing around with BLE on Arduino Nano 33 BLE board and I thought that it would be good idea to delete BLE.central() in loop() as I had some issues with BLE communication. After uploading program immediately noticed orange blinking diode…
Enabling SMB v1 on Windows to resolve issues
Posted by LuGru in Uncategorized on 29/11/2017
Before going into details a little back story.
SMB v1 is old proprietary protocol (now open sourced, after it was reverse engineered) and should be avoided if possible. Most of the time we can forget about it especially in recent lights of WannaCry outbreaks. So why do I write about enabling it, right?
When using VLC on my portable devices (iOS and Android TV) after host Windows 10 upgrade to Fall Creators Update did noticed that those devices can’t no longer access shares. When navigating to host, that I know had shares enabled, nothing happened and VLC just displayed “Empty folder”, it didn’t event asked for authentication on that device (accessing shares do require authentication on that host). VLC do use libdsm (Defective SMb)(*1) that probably don’t fully support new SMB protocols. Using Mac as smb host do also cause some issues with SMB but OS update apparently do fix that.
FreeFileSync and syncing with old Mac 10.9.5 (IIRC) caused issues with inability to read / traverse content of directories etc. This was corrected in some macOS update. As far as I know FFS do use native OS calls so issue that I did experienced was mostly on macOS side, but as I said this do affected only old 10.9.5 versions, after updating to recent version issue was resolved. Reason why I did kept that device with so old os version was because QA testing.
More info about issues plagued SMB v1: https://blogs.technet.microsoft.com/filecab/2016/09/16/stop-using-smb1/
WLAN hard blocked
Posted by LuGru in Uncategorized on 16/03/2017
For a long time I was happy with my Debian install, everything was working fine and as expected… that is until, recent, update.
After normal kernel update (to another iteration of 3.16 version), something around mid January / February 2017, I did noticed that after reboot my laptop don’t bring up WLAN adapter up and states, in GNOME menu under Wi-Fi, that device is “Hardware disabled”.
Issuing command like:
ifconfig wlan0 up
resulted in:
SIOCSIFFLAGS: Operation not possible due to RF-kill Read the rest of this entry »
Nautilus restore type ahead select functionality
Posted by LuGru in Uncategorized on 05/09/2016
For me personally new “deep search” functionality (CTRL+F) introduced in Files (aka. nautilus) when typing inside window is most annoying “feature” to date.
I do use multi OS on daily basis, due to my work, and both Finder (OsX) and Explorer (Windows) do support type select functionality but apparently Nautilus is an exception. Read the rest of this entry »
Compile cifs.ko / md4.ko for the Cube U30 GT / Shogun – Rk3066 chip
In previouse post I described how to use cifs module to access PC shares. Now it’s time to compile it Yourself.
Cube U30GT / Shogun – Rk3066 – cifs.ko md4.ko
After five months of waiting it is here – CIFS arrived to my tablet due to release of the GPL’ed kernel source code by bq, Spanish company.
This module was really anticipate by anyone who want to share data between PC and android tablet without any hassle that SMB place upon user. I mean there is no need to copy of the hundreds of MB just to read some PDF or interact with other file types!
With CIFS You can enjoy 2TB HDD mounted into Your Android tablet as local hard drive!
Read the rest of this entry »
Shiru Shogun – aka. Cube U30GT – recenzja
Shiru Shogu is rebranded Cube U30GT and because there is a lot of reviews for that tablet and becuase Shogun is available only in poland (as far as I know) I will write this review in my native language.
Od pewnego czasu, a dokładniej od zakupu fatalnego GoClever T75, który 90% czasu, jaki go posiadam, spędza w serwisie, zacząłem szukać alternatywnego rozwiązania. 7 cali jest atrakcyjne z trzech względów, tj. cenowo, z powodu mniejszych rozmiarów oraz oczywiście wagi, jednak płacimy za to czytelnością ekranu, dlatego też tym razem swoje poszukiwania zawęziłem do 10’cio calowego tabletu. Ponieważ budżet jaki przeznaczyłem na zakup tabletu był stosunkowo ograniczony, do około 280$ / 1000zł, dlatego nie brałem pod uwagę topowych produktów na rynku. Z pomocą w takich sytuacjach, zresztą jak zawsze, przychodzą „zamienniki” od naszych wschodnich sąsiadów. Read the rest of this entry »
Android error: “… could not be installed. Free up some space and try again.”
While installing application (actually reinstalling) I stumble upon strange problem with free space. The instalator was complainging that I don’t have enought free space, “… could not be installed. Free up some space and try again.”
That was strange because I had a lot of free space, more then 500MB on internall memory and over 15GB on external memory.