Black screen aka black death

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Seems like a lot of people are facing problem waking up the phone resulting in getting black screen and nothing else.

I faced the same problem too that is why I decided to create a new thread specifically on this.

Let's share what caused our phone to go into coma based on our observations so that in time, the root of the problem can be traced.

Based on my observation, when my phone is left idle for some time, say 1-2hrs, it tends to become sluggish and setcpu will stuck at max or min value (Yes! sluggish even when stuck at max value!). Given long enough idle time, it will fail to wake up (e.g. every morning when i wake up after 7-8hrs of idle time).

I was using OpenDesire v4.0.10 and just changed to v4.0.15 to see if it still exist. I have setcpu set on 1075max 245min (ondemand) and 245max 245min (ondemand) when screen off. Also, using task manager.

Please share your observations and phone settings (ROM, versions, setcpu, task manager and others)

have you tried removing setcpu?

Originally Posted by cgrec92

have you tried removing setcpu?

Nope, but in OpenDesire thread, people without setcpu experienced the same thing. Do you have such problem?

I noticed using setcpu does make the phone sluggish. when uninstalled problem was solved.
Installed undervolt & got better batt life.

Sent from my HTC Desire using XDA App

Perhaps, a more tailored topic title will help all readers understand what you're talking about.

However, HAVS kernels is the only common factor and SetCPU is not the cause.

And, my two cents, I don't think this issue deserves a dedicated thread since is specific to a single kernel flavor.

Originally Posted by shai.bosse

I noticed using setcpu does make the phone sluggish. when uninstalled problem was solved.
Installed undervolt & got better batt life.

Sent from my HTC Desire using XDA App

what is this undervolt you talking about? mind elaborating a little?

Originally Posted by @ngel

Perhaps, a more tailored topic title will help all readers understand what you're talking about.

However, HAVS kernels is the only common factor and SetCPU is not the cause.

And, my two cents, I don't think this issue deserves a dedicated thread since is specific to a single kernel flavor.

I created a specific thread on this topic because there are many people out there experiencing this bug and there is no dedicate thread to discuss it. I assume you are not facing this problem because otherwise you would understand the pain and frustration of encountering this problem repeatedly

Originally Posted by webber2109

what is this undervolt you talking about? mind elaborating a little?

Undervolt is a kernel mod that you install and it lowers the cpu drain by setting it to use lower volt values on each cpu freq. This cause it to stay cooler too.
Look for it in this forum. [Kernel] undervolt

Sent from my HTC Desire using XDA App

I am suffering from this once per day on Defrost and OD so I suspect its kernal related. I am running the default HAVS kernel at the stock 998 frequency. I uninstalled SetCPU yesterday and had a lock this morning ( Defrost 4.1 ). The notification LED was flashing orange. So SetCPU is not causeing the problem. I have swapped over to SVS so I will report back on how that goes.

Originally Posted by webber2109

Nope, but in OpenDesire thread, people without setcpu experienced the same thing. Do you have such problem?

I use OpenDesire 4.0.10, then 4.0.15, then 4.0.16, each release for at least 3 days, and not for once have I encountered such "black death"....no setCPU of course.

Care to elaborate what apps you have there ?