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Question

Easynote TK85, GPU not recognized

by Mar 22, 2015 2:37AM PDT

I am a proud owner of a Packard Bell easy note tk85. It worked fine for many years but a week ago the battery died while using it. I thought no problem, charged it and booted it but the display stayed off.

I attached it to an external monitor through VGA and I see that the graphics card (mobility radeon hd 5470) isn't recognized, neither in Windows, Fedora and not even in the BIOS.

I tried everything I know, for example resetting the cmos, opened it and looked for broken cables etc.

Can someone please help me?

Discussion is locked

7 Posts
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Answer
Sorry no.
by Forum moderator Mar 22, 2015 2:40AM PDT

You completed the tests I use to call it a hardware failure. Since it's well beyond it's expected life span you hunt for spare parts such as the board the GPU is on or the CPU mainboard to see if you can bring it back.

With all those boots I take it the other standard graphics works. That may be the best thing for this laptop. Use it sans this GPU.
Bob

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But why?
by merlin294 Mar 22, 2015 2:43AM PDT

Thank you for your answer, I just have a quick question: How can an empty battery be the trigger for this failure?

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To find out why you repair the machine.
by r. proffitt Forum moderator Mar 22, 2015 2:48AM PDT

Swap boards until it works. To root cause analysis will be expensive. One of my prior jobs was such but the cost was borne by governments and military. They paid for finding it was some trace, chip, or other. Without a full lab we can't go that deep. For consumer gear you swap parts to find the failed part.

That said you will encounter clients that want to know what happened beyond the failed board.
Bob

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Somehow it gets recognized
by merlin294 Mar 22, 2015 2:52AM PDT

The GPU is somehow recognized: Under Ubuntu, I tried the "lshw -C display"-command and it gives me the following output:

description: VGA compatible controller
product: Park [Mobility Radeon HD 5430/5450/5470]
vendor: Advanced Micrro Devices, Inc. [AMD/ATI]
...

Maybe this information helps.

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Sorry
by merlin294 Mar 22, 2015 2:54AM PDT

sorry for the double answer Sad

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Somehow recognized
by merlin294 Mar 22, 2015 2:49AM PDT

The GPU is somehow recognized: Under Ubuntu, I tried the "lshw -C display"-command and it gives me the following output:

description: VGA compatible controller
product: Park [Mobility Radeon HD 5430/5450/5470]
vendor: Advanced Micrro Devices, Inc. [AMD/ATI]
...

Maybe this information helps.

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You sound like you wish it was not a hardware issue.
by r. proffitt Forum moderator Mar 22, 2015 2:51AM PDT

If the maker's supplied OS and such doesn't see it and there are no oddities like a non-stock BIOS you wrap it up and wait for the client to stew and soften up to hardware fixes.
Bob

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