A lesson on LVDS, impedance and cheap cables from China

A handful of months ago, my laptop (Lenovo Ideapad Y500 for those wondering) started suffering with screen issues. Specifically the ones that result from the tiny wires in the LCD cables shearing in the hinges. Taking it upon myself to go to eBay to find a replacement, I found a single seller selling the part […]

Compaq CQ60 Display Issues – The Unexpected Part 3

I recently had an unexpected part 3 to this tale the other day, when the display went. Again. But this time, different symptoms. This time, the backlight went. Oh sh*t, replacing LCD panels isn’t exactly cheap, and since the backlight diffusers and CCFL’s are fused to the back of the LCD panel itself, there was […]

Compaq CQ60 Display Woes – Part 2

So in my previous post relating to this, I’d sent the machine back twice to HP to be repaired. The first visit gained a new motherboard and CPU. The second visit gained a new LCD assembly. But still the fault persisted. It sort of worked alright-ish for around a week or so, but then gave […]

Managing hack/DoS attempts automatically

I was recently recommended some software to prevent (or at least act on) automated hack/DoS attacks on services. The usual suspects triggered this, dictionary attempts on common usernames on servers, “admin”, “administrator”, “root”, etc. Up until now, I’ve been monitoring for unusual network activity. When the traffic reached a certain peak for a specific length […]