Re: Powerbook shuts down hard when hot, patch found

2007-10-01 Thread Michel Dänzer
On Mon, 2007-10-01 at 22:58 +0200, Michael Buesch wrote: > On Monday 01 October 2007 10:00:02 Michel Dänzer wrote: > > > > On Sun, 2007-09-30 at 12:16 +0200, Michael Buesch wrote: > > > > > > Ah, forgot to say. > > > It does not crash immediately when the register is written. It takes > > > abo

Re: Powerbook shuts down hard when hot, patch found

2007-10-01 Thread Michael Buesch
On Monday 01 October 2007 10:00:02 Michel Dänzer wrote: > > On Sun, 2007-09-30 at 12:16 +0200, Michael Buesch wrote: > > > > Ah, forgot to say. > > It does not crash immediately when the register is written. It takes about > > two seconds > > to crash. And when the machine is colder to begin wit

Re: Powerbook shuts down hard when hot, patch found

2007-10-01 Thread Michel Dänzer
On Sun, 2007-09-30 at 12:16 +0200, Michael Buesch wrote: > > Ah, forgot to say. > It does not crash immediately when the register is written. It takes about > two seconds > to crash. And when the machine is colder to begin with, it takes slightly > longer to trigger. That _might_ support your ov

Re: Powerbook shuts down hard when hot, patch found

2007-09-30 Thread Michael Buesch
On Sunday 30 September 2007 12:13:36 Michael Buesch wrote: > On Sunday 30 September 2007 00:49:05 Benjamin Herrenschmidt wrote: > > Well, it's possible that they have a too weak pull-up resistor on those > > lines, and thus when asserted to 0, a significant current goes through > > causing the whol

Re: Powerbook shuts down hard when hot, patch found

2007-09-30 Thread Michael Buesch
On Sunday 30 September 2007 00:49:05 Benjamin Herrenschmidt wrote: > Well, it's possible that they have a too weak pull-up resistor on those > lines, and thus when asserted to 0, a significant current goes through > causing the whole thing to heat up. That heat added to the residual heat > of a hot

Re: Powerbook shuts down hard when hot, patch found

2007-09-29 Thread Benjamin Herrenschmidt
On Sun, 2007-09-30 at 00:26 +0200, Michael Buesch wrote: > On Sunday 30 September 2007 00:19:53 Benjamin Herrenschmidt wrote: > > > > > > > > This all smells to me like a silicon bug, so I'd start searching > > > in the silicon erratas. But I'm not sure, of course. It's also strange > > > that i

Re: Powerbook shuts down hard when hot, patch found

2007-09-29 Thread Michael Buesch
On Sunday 30 September 2007 00:19:53 Benjamin Herrenschmidt wrote: > > > > > This all smells to me like a silicon bug, so I'd start searching > > in the silicon erratas. But I'm not sure, of course. It's also strange > > that it depends on temperature. (That's why I first expected the PMU > > wou

Re: Powerbook shuts down hard when hot, patch found

2007-09-29 Thread Benjamin Herrenschmidt
> > This all smells to me like a silicon bug, so I'd start searching > in the silicon erratas. But I'm not sure, of course. It's also strange > that it depends on temperature. (That's why I first expected the PMU > would cause this). > > Thanks for your help. Could be that we are creating a sho

Re: Powerbook shuts down hard when hot, patch found

2007-09-29 Thread Michael Buesch
On Saturday 29 September 2007 23:51:55 Benjamin Herrenschmidt wrote: > > On Sat, 2007-09-29 at 13:22 +0200, Michael Buesch wrote: > > On Saturday 29 September 2007 13:06:59 Michael Buesch wrote: > > > > This is very strange... Can you try also clearing VGA_DDC_CLK_OUT_EN and > > > > VGA_DDC_DATA_O

Re: Powerbook shuts down hard when hot, patch found

2007-09-29 Thread Benjamin Herrenschmidt
On Sat, 2007-09-29 at 13:22 +0200, Michael Buesch wrote: > On Saturday 29 September 2007 13:06:59 Michael Buesch wrote: > > > This is very strange... Can you try also clearing VGA_DDC_CLK_OUT_EN and > > > VGA_DDC_DATA_OUT_EN and the same time and see if that helps ? > > > > It still triggers the

Re: Powerbook shuts down hard when hot, patch found

2007-09-29 Thread Michael Buesch
On Saturday 29 September 2007 13:06:59 Michael Buesch wrote: > > This is very strange... Can you try also clearing VGA_DDC_CLK_OUT_EN and > > VGA_DDC_DATA_OUT_EN and the same time and see if that helps ? > > It still triggers the bug then. I tried something else. I removed the write and only adde

Re: Powerbook shuts down hard when hot, patch found

2007-09-29 Thread Michael Buesch
On Saturday 29 September 2007 01:04:13 Benjamin Herrenschmidt wrote: > > On Fri, 2007-09-28 at 23:32 +0200, Michael Buesch wrote: > > Hi, > > > > some time ago I already mailed you about this problem. > > I will quickly describe what's going on, again: > > > > My powerbook boots fine when it's c

Re: Powerbook shuts down hard when hot, patch found

2007-09-28 Thread Benjamin Herrenschmidt
On Fri, 2007-09-28 at 23:32 +0200, Michael Buesch wrote: > Hi, > > some time ago I already mailed you about this problem. > I will quickly describe what's going on, again: > > My powerbook boots fine when it's cold. You can work with > it and you can also run it hot (compile something, etc...).

Powerbook shuts down hard when hot, patch found

2007-09-28 Thread Michael Buesch
Hi, some time ago I already mailed you about this problem. I will quickly describe what's going on, again: My powerbook boots fine when it's cold. You can work with it and you can also run it hot (compile something, etc...). But when you try to boot it while it is hot, it will automatically shutd