GNU Screen: No more ptys? - maemo.org

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jibanes	2008-01-06 , 00:59
Posts: 42 \| Thanked: 4 times \| Joined on Dec 2007	#1

Hello,

When I compile GNU screen-4.0.2 for my N810, it creates the armel binary just fine, but I have only one pty, when I try to create a new screen (ctrl-a c) it displays "No more ptys", I'm guessing the # of ptys is hardcoded somewhere, or there's an OS2008 trick I'm not aware of, have any of you successfully used screen on your OS2008 device?

Please note that attaching and detaching a screen session works just fine, I just can't have more than one pty which is really not great.

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jibanes	2008-01-06 , 01:45
Posts: 42 \| Thanked: 4 times \| Joined on Dec 2007	#2

Okay I found why, there's a kernel tunable on OS2008 as such:

kernel.pty.max = 4

So I bump'd it to 256 and we're in business again!
Thread closed, problem solved.

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dblank	2008-01-06 , 02:12
Posts: 465 \| Thanked: 149 times \| Joined on Oct 2007	#3

Originally Posted by jibanes

Okay I found why, there's a kernel tunable on OS2008 as such:

kernel.pty.max = 4

So I bump'd it to 256 and we're in business again!
Thread closed, problem solved.

I think you can just "echo num > /proc/sys/kernel/pty/max" as well.

The latest OS2008 bumps it to 16.

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jibanes	2008-01-06 , 03:52
Posts: 42 \| Thanked: 4 times \| Joined on Dec 2007	#4

Yes, that's right RX-44_2008SE_2.2007.50-2_PR_COMBINED_MR0_ARM.bin sets it by default to 16, which is probably enough for a low-end workstation/pda. I'm glad I have screen on this thing working, that's for sure.

Also, glad to see that the latest rev is on 2.6.21.

Jerome

Last edited by jibanes; 2008-01-06 at 04:31.