Title says it all. If I have both the CPU and GPU crunching turned on, wee bit after BOINC kicks in and starts some work, the whole machine freezes. Can't even move the mouse, no apps update the screen, no CTRL+ALT+DEL, nothing. But, if I suspend the GPU, CPU-only crunching works just fine.

For the specs of the machine, see http://www.samsung.com/us/computer/pcs/NP940X3G-K05US-specs.

In the Event Log, misc stuff is detected & reported as:

12/23/2013 1:06:32 AM | | OpenCL: Intel GPU 0: Intel(R) HD Graphics 4400 (driver version 10.18.10.3282, device version OpenCL 1.2, 1784MB, 1784MB available, 64 GFLOPS peak)
12/23/2013 1:06:32 AM | | OpenCL CPU: Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz (OpenCL driver vendor: Intel(R) Corporation, driver version 3.0.0.8453, device version OpenCL 1.2 (Build 73988))
12/23/2013 1:06:32 AM | | Host name: TUNAE-ATIV
12/23/2013 1:06:32 AM | | Processor: 4 GenuineIntel Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz [Family 6 Model 69 Stepping 1]
12/23/2013 1:06:32 AM | | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss htt tm pni ssse3 fma cx16 sse4_1 sse4_2 movebe popcnt aes syscall nx lm vmx tm2 pbe
12/23/2013 1:06:32 AM | | OS: Microsoft Windows 8.1: Core x64 Edition, (06.03.9600.00)
12/23/2013 1:06:32 AM | | Memory: 7.92 GB physical, 9.79 GB virtual
12/23/2013 1:06:32 AM | | Disk: 229.57 GB total, 179.82 GB free

Projects I am running are:

12/23/2013 1:06:32 AM | rosetta@home | URL http://boinc.bakerlab.org/rosetta/; Computer ID 1673183; resource share 100
12/23/2013 1:06:32 AM | Poem@Home | URL http://boinc.fzk.de/poem/; Computer ID 175838; resource share 100
12/23/2013 1:06:32 AM | Einstein@Home | URL http://einstein.phys.uwm.edu/; Computer ID 9903434; resource share 100
12/23/2013 1:06:32 AM | SETI@home | URL http://setiathome.berkeley.edu/; Computer ID 7173885; resource share 400
12/23/2013 1:06:32 AM | World Community Grid | URL http://www.worldcommunitygrid.org/; Computer ID 2649138; resource share 100

Anybody knows anything? Is there a debug mode I can use to report what has happened up until the freeze? Or, should I just return this box and buy a new one, hoping to blame the onboard Intel GPU? Or, is there a better driver for it?

Thanks
Tuna

You mention that you are running the Einstein project, and that you are running driver 10.18.10.3282 on your HD 4400 graphics.

That combination has caused problems for other people too - read Errors running Einstein@home on Intel 4000 graphics at Einstein. The general consensus seems to be that downgrading to the 9.18.10.3071 driver might help.

Seems about right. I have not rolled back the driver, but instead tried a better laptop, an ASUS Zenbook Infinity with HD5100, running it with 10.18.10.3308, plus better CPU+SSD, and Einstein again caused freezes. Not only that, but some other older laptops with HD4000 started freezing or reporting Computation Errors for Einstein tasks.

So, all I can do is to keep Einstein suspended on such laptops. Too bad.

I wonder if Einstein folk know about this.

I wonder if Einstein folk know about this.

They do. You posted right after Bikeman (Heinz-Bernd Eggenstein), Forum moderator, Project administrator, Project developer in the thread over at Einstein.

So, all I can do is to keep Einstein suspended on such laptops. Too bad.

You can run it on the CPU(s).
You can try to roll back to a previous (non 10.xx) driver version. https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=23106 has 9.18.10.3257 (inside the 15.31.17.64.3257 version package).

This software driver package will install the Intel® Iris™ and HD graphics driver for:

Intel® Pentium® Processor 2000/3000/G2000/G2100/G3000 Series
Intel® Celeron® Processor 900/1000/2000/G1000 Series

3rd Generation Intel® Core™ Processors with:
Intel® HD Graphics 4000/2500

4th Generation Intel® Core™ Processors with:
Intel® HD Graphics 4200/ 4400/4600/5000
Intel® IrisTM Graphics 5100
Intel® IrisTM Pro graphics 5200

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See also https://einstein.phys.uwm.edu/forum_thread.php?id=10505.

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