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| 02:55.01 | mr_chris | Hi there. I'm running Debian squeeze on a PowerMac Dual G4 sawtooth. It works great when running the stock Kernel but when installing the SMP kernel the mouse skips and stutters. |
| 02:55.27 | mr_chris | I should add that it has done this for every version of Linux I've ever tried on it with this kernel and that it has a Sonnet processor upgrade. |
| 02:59.33 | pahartik | mr_chris: Have you tried configuring and building custom kernels with changes to possibly relevant options? |
| 03:01.07 | mr_chris | paharatik: I have not. I've built kernels before but it's been a long time. Any tips on identifying what could possibly be causing the issue so I know what options to change? |
| 03:02.11 | mr_chris | I guess the first thing I should do is try the old processor and see if it exhibits the same issue. |
| 03:14.13 | pahartik | mr_chris: Interrupt sharing between CPUs, HZ and PREEMPT settings |
| 03:15.08 | mr_chris | pahartik: Thanks. That's a start. |
| 03:16.37 | mr_chris | It's definitely related to the Sonnet processor. The problem is not present in the stock proc. |
| 03:17.36 | pahartik | mr_chris: I have not noticed such problem with dual-CPU PowerMacintosh MDD |
| 03:18.36 | mr_chris | pahartik: I think this may be a special case. The processor I was trying with it is a third party upgrade. |
| 03:26.00 | mr_chris | Unless you mean that your MDD has a similar upgrade. |
| 03:29.00 | mr_chris | Oops. Not sonnet. I mean powerlogix. I have one of these. http://www.everymac.com/upgrade_cards/powerlogix/powerforce_g4_100/powerforce_g4_100_1.2_dual.html |
| 03:33.57 | pahartik | mr_chris: "MDD" is reference to PowerMacintosh workstation model |
| 03:36.11 | mr_chris | pahartik: Mirror Drive Door I assume. |
| 03:45.26 | pahartik | mr_chris: Yes, that |
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