The new security panel for Chrome/Chromium from v48

Google announced the new security panel for Chrome from v48 in Chrome’s DevTools, this feature can help users easily know the security information for every network connection/request in a certain website, including the certificate info, now it’s been easier to debug what’s the reason why a website didn’t get a green lock on the url bar(A website using https with enough strengh will have a green lock icon).

Screenshots as example (using my blog):




Security Panel debuts in Chrome DevTools

Introducing the Security Panel in DevTools – Chromium Blog

Mute certain tab in Google Chrome/Chromium

Open chrome://flags/#enable-tab-audio-muting and enable “Enable tab audio muting UI control” option, then restart your browser.

Now we can have mute option on each tab:

After that, there will be a muted icon on the tab, and if you want to unmute it, there is also an unmute option in the menu of the tab.

Very useful when surfing to some noisy websites!

BTW , the demo screenshots came from the trailer of Transcendence, a very very awesome movie!

Build Chromium OS from source [notes]

Environment: Ubuntu server 14.04.2 LTS x86_64 with Xeon E3-1230 V2 and 8G ram

Reference: Chromium OS Quick Start Guide

Step by step:

Install the necessary packages:

Install depot_tools:

Add depot_tools to your PATH:

Tweak sudoers config:

Create directory for chromiumos:

Get the source code:

Create(and enter) a chroot(still in the directory for chromiumos):

Choose a board you want to build for, from ~/trunk/src/overlays, and export it to environment:

(I selected amd64 arch)
Setup board:

Setup password:

(if you want to config kernel, you can try to configure it now, via ~/trunk/src/third_party/kernel/v3.4/chromeos/scripts/kernelconfig, place v3.4 with your kernel version here)
Build packages:

Build image(we are almost there):

Copy image to a usb drive:

or copy to file:

or create a imgage for virtual machine
(default for kvm, for other vm you can pass parameters –format=vmware or –format=virtualbox):

(image will be here : ~/trunk/src/build/images/${BOARD}/latest/)

If you copy image to a file, you can use dd to write to a usb disk like this:

And then you can boot a computer via this usb disk now.

If you got kernel panic, you may need to press Esc and try this command to boot

, X may be a~e

If you want to install Chromium OS to your hard disk, try this command when your usb disk boot up:

, PS, it’ll wipe your disk!!!

Don’t know what’s the reason why it’ll keep getting deadly segment fault and hang, but it works on my acer Aspire one D150, a super old notebook, the performance is not so good, and I don’t know how to remap the keyboard on it(there are 3 broken keys orz …), so I just quit, ha!

Only 2 screenshots this time … took by my low-end phone.