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T43p is freezing intermittently in Linux

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lukee
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T43p is freezing intermittently in Linux

#1 Post by lukee » Thu Feb 19, 2015 5:41 pm

My T43p is intermittently and completely freezing in Ubuntu 14.04, 14.10 and in Fedora 21 Workstation. Sometimes it happens accidentally, sometimes per user's invoke, ie. Fn+F3 (switch off the LCD). I thought this is a sign of the known southbridge issue so typical for T4x series. However, I cannot reproduce the problem in Windows XP. USB devices are running at full 2.0 speed as well. I ran some performance-intensive apps on XP today using also 3DMark and I cannot make the laptop frozen in Windows. I think the problem also might be a defective RAM module, correct? Is there some way how to test every RAM's cell? Note: only way how I can get from that frozen state is hard shutdown. Thanks.
Current: T420
Previous: T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570

Neil
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Re: T43p is freezing intermittently in Linux

#2 Post by Neil » Thu Feb 19, 2015 6:14 pm

Memtest86+ is an excellent tool for checking RAM for errors. If you don't have the option to run Memtest86+ from the GRUB menu of an installed OS, it is included in the LiveDVD of Ubuntu.
Collection = T430 - T500 - R400 - X300 - T61 (14" WXGA+) - R61 (15" SXGA+) - X40 - T43p - T43 - T42p - A30P

ajkula66
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Re: T43p is freezing intermittently in Linux

#3 Post by ajkula66 » Thu Feb 19, 2015 11:05 pm

If you can't invoke the freezing in XP, the chances are that the hardware is fine.

Test the GPU with Freestone in XP - make sure to run TPFC and at maximum fan - for a few hours and if the system doesn't freeze there, you might just have to look at another distro/kernel.

http://freestone-group.com/video-card-s ... y-test.htm

Good luck.
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

AARP club members:A31p,T43pSF

Abused daily: T61p

Work in progress: X60T

PMs requesting personal tech support will be ignored.

lukee
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Re: T43p is freezing intermittently in Linux

#4 Post by lukee » Fri Feb 20, 2015 11:24 am

I have installed Memtest86+ into my Fedora's GRUB, then run it and the test passed. Then I switched HDD and I am running the VideoCard Stability test for ~2 hours now and nothing happens - ThinkPad runs just fine, tpfancontrol shows ~90deg Celsius for CPU and GPU, fan is running at 5500rpm. I have also tried to move and gently flex the laptop few times during the test and there is no freezing at all. I can't believe that such robust GNU/Linux system may freeze so easily... :?
Current: T420
Previous: T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570

shawross
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Re: T43p is freezing intermittently in Linux

#5 Post by shawross » Fri Feb 20, 2015 8:34 pm

IMHO 90 degrees Celsius is way toooooooo hot. I know the "p" models run hot but this is asking for problems

Good luck
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ajkula66
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Re: T43p is freezing intermittently in Linux

#6 Post by ajkula66 » Fri Feb 20, 2015 8:49 pm

shawross wrote:IMHO 90 degrees Celsius is way toooooooo hot. I know the "p" models run hot but this is asking for problems

Good luck
That's actually OK under Freestone which stresses the living daylight out of the GPU. I got 96 on my past T43p machines more than once.
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

AARP club members:A31p,T43pSF

Abused daily: T61p

Work in progress: X60T

PMs requesting personal tech support will be ignored.

lukee
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Re: T43p is freezing intermittently in Linux

#7 Post by lukee » Mon Feb 23, 2015 1:07 pm

Problem probably found. It is GPU issue for 99%. Yesterday I have noticed few flickering lines at the bottom of the screen. I took the laptop from table to my hands and gently flex it - flickering disappeared. I have already discussed with friend of mine (PhD. from Electronics) and he is able to reflow it using the reflow station in his job. I need to prepare the planar for him and remove all the plastic stickers from it. Pray for me the planar will get repaired, otherwise I will need to look around for a spare one.
Current: T420
Previous: T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570

ajkula66
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Re: T43p is freezing intermittently in Linux

#8 Post by ajkula66 » Mon Feb 23, 2015 1:15 pm

lukee wrote: Pray for me the planar will get repaired, otherwise I will need to look around for a spare one.
You may as well start looking for one right now.

T43/p as well as late T42/p "red dot" boards must be re-balled - not reflown - due to epoxy that holds the BGAs in place on both GPU and SouthBridge, and these are a royal PITA to remove.

Otherwise, you may just take the planar out and bake it in your own oven. Seriously.
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

AARP club members:A31p,T43pSF

Abused daily: T61p

Work in progress: X60T

PMs requesting personal tech support will be ignored.

lukee
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Joined: Mon Oct 12, 2009 7:17 am
Location: CZ / Europe

Re: T43p is freezing intermittently in Linux

#9 Post by lukee » Sun May 17, 2015 3:03 am

The problem was caused by deffective motherboard. Reflow baking of the old motherboard did not help.
I have obtained new motherboard from T43 (with ATI Radeon X300) and it works pretty well, driving the UXGA fabulously.
Current: T420
Previous: T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570

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