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Lenovo AMD FUsion E350 freezes on log in screen Natty if running on Battery

Asked by jvgeli

I have a lenovo running on AMD E350 and ATI GPU. When I boot my system it locks up either at the log in screen or shortly after logging in, 1-5 seconds. I have to hard reset the laptop. This ONLY happens when I am on battery and does not happen when the laptop is connected to AC power supply.

Already tried forcing version of PM Utils to lucid but its not working.

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actionparsnip (andrew-woodhead666) said : 		#1

Have you tested your RAM?

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jvgeli (jvgeli) said : 		#2

Yes, I tested all the modules using memtest and all were clean. i dont have this lock ups in Windows on the same machine. I have dual boot Win 7 and Natty.

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actionparsnip (andrew-woodhead666) said : 		#3

What model Lenovo is it?

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jvgeli (jvgeli) said : 		#4

g475

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actionparsnip (andrew-woodhead666) said : 		#5

http://askubuntu.com/questions/47689/freeze-after-init-bottom-script-before-installation-starts-on-a-lenovo-g475

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jvgeli (jvgeli) said : 		#6

Hi, sorry but the solution was to downgrade to the LTS version rather than finding out a solution to the problem in Natty. I too tried Lucid before and i dont get the freezes which would mean the problem is in natty. I like Natty's features but it seems it is not too stable.

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actionparsnip (andrew-woodhead666) said : 		#7

Are there any bugs reported for your model under Natty?

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jvgeli (jvgeli) said : 		#8

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/776999

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jvgeli (jvgeli) said : 		#9

issue is resolved somehow by disabling "Spin down Hard disk whenever possible" in power management. Will keep monitoring if i dont get any freezes anymore.

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jvgeli (jvgeli) said : 		#10

still have the issue.

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