Re: Real-Time Preemption, -RT-2.6.12-final-V0.7.50-24

Gene Heskett
2005-06-27T21:26:12Z

On Monday 27 June 2005 15:42, Chuck Harding wrote:
>On Mon, 27 Jun 2005, Chuck Harding wrote:
>> What can be causing the following message to appear in dmesg and
>> how can I fix it?
>>
>> BUG: scheduling with irqs disabled: kapmd/0x00000000/46
>> caller is schedule_timeout+0x51/0x9e
>> [<c02b3bc9>] schedule+0x96/0xf6 (8)
>> [<c02b43f7>] schedule_timeout+0x51/0x9e (28)
>> [<c01222ed>] process_timeout+0x0/0x5 (32)
>> [<c0112063>] apm_mainloop+0x7a/0x96 (24)
>> [<c0115e45>] default_wake_function+0x0/0x16 (12)
>> [<c0115e45>] default_wake_function+0x0/0x16 (32)
>> [<c0111485>] apm_driver_version+0x1c/0x38 (16)
>> [<c01126f7>] apm+0x0/0x289 (8)
>> [<c01127a6>] apm+0xaf/0x289 (8)
>> [<c010133c>] kernel_thread_helper+0x0/0xb (20)
>> [<c0101341>] kernel_thread_helper+0x5/0xb (4)
>>
>> This was also present in earlier final-V0.7.50 version I've tried
>> (since -00) I don't get hangs but that doesn't look like it should
>> be happening. Thanks.
>
>another symptom (don't know if it's actually related) is that if I
>try to switch to a virtual consol (ctl-alt-chift-F[1..6] the screen
>won't change out of graphics mode - it goes black like it's trying
>to switch but comes back with the graphical screen which isn't
> responsive and hitting alt-F7 restores it to operation. I just
> rebooted to a kernel that doesn't have the RT-preempt patch but
> uses the same .config and everything for switching between X and
> virtual terminals works just fine.

Its working ok here, but not with those keystrokes. I just did it
several times. Its ctl+alt+Fn here, and always has been.

What I did see on VT#1, where the boinc stuff was being spit out
before I logged in and did a startx, is that I have less then a
screenfull of history available, and unlike previous kernels, I'm
getting a very verbose running trail, almost like an strace output,
of all the kde/kmail activities going on being output to VT#1. VT#2
seems normal and I was able to log into it just fine before hitting
ctl+alt+F7 to come back to X. Weird to say the least.

But this brings up the question re how do I enlarge the scrollback
memory of an init-run-level=3 VT?

--
Cheers, Gene
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Copyright 2005 by Maurice Eugene Heskett, all rights reserved.