X broken as drmSetMaster failed

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That was a bad evening, I upgraded my debian box and X failed to start throwing below errors.

6017.269] (EE) modeset(0): drmSetMaster failed: Permission denied
[ 6017.269] (EE)
Fatal server error:
[ 6017.269] (EE) AddScreen/ScreenInit failed for driver 0

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Blank Screen of VNC

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Recently I found already running VNC landed with blank screen out of the moon. Debugging revealed after uninstalling some packages related with Window/Desktop managers, existing xstartup of VNC failed to call Desktop manager. Experienced frequently with Gnome. My VNC again came back to life with below xstartup which instructs VNC to call DM explicitly. Read the rest of this entry

Decrypt BitLocker encrypted drive through Linux

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Once I had a situation, my work laptop (based on M$ win7 as per choice of organisation) entered into most infamous “Blue screen of Death”. The hard disk was BitLocker encrypted and the data on it was very important for me due to its research value. Do you know how Linux helped me to recover my data ?

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Wifi Access Point and Station on same chip – share internet too

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Users of cable-net like 24online need authentication to activate internet connection. If the connection is attached with wifi router, user has to authenticate via wifi in station mode. If internet is required on mobile at the same time, an access point is also required.

Linux can configure both wifi station and access point on the same chip (if supported), so users can get internet on laptop and on mobile devices simultaneously.  This post is based on debain, though the same approach is valid for other distro. It is assumed the wifi station is already configured and internet is available through that station.  Read the rest of this entry

Setup free enterprise grade email hosting for business

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So you have a domain and want free Industry standard Email hosting

Well, you are not alone 🙂 Many small business/startup needs such email system from day one. Even users having personal domain also want their own email hosting. Recently I have checked some Free email hosting providers and finally stuck with Zoho. Let me inform you, this post is neither a comparison between free email hosting providers nor an effort to promote Zoho, but a post about how to successfully setup an enterprise grade FREE email hosting on Zoho. Read the rest of this entry