Getting "sh: Can't Access Tty; Job Control Turned Off" With Fresh NOOBS

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Learn more about Teams Getting "sh: can't access tty; job control turned off" with fresh NOOBS Ask Question Asked 9 years, 9 months ago Modified 9 years, 6 months ago Viewed 10k times 2

Initially, my Raspberry Pi B+ was working fine, but after I play with some GPIO pins, I got the following message immediately after the rainbow screen while booting the device.

sh: can't access tty; job control turned off / #

Then, I unplug all the pins and boot it again. Still got the same message. I also added avoid_safe_mode=1 in /boot/config.txt, but still no luck. Then, I formatted my SD card and put a fresh NOOBS on it, but I still see the same message. Any suggestion what other things I can try? Or the Pi has died? Thank you

• boot

Share Improve this question Follow asked Feb 5, 2015 at 5:45 pohepohe 2111 gold badge11 silver badge22 bronze badges 2

• Good idea to format the SD card. You could try with a fresh card perhaps. Are there any other messages before the one you post? I assume what you post is the last one seen. The GPIO pins are known to be somewhat sensitive to overvoltage and other abuse. Still the pi seems not completely dead since it gets so far as to get sh running. – Frepa Commented Feb 5, 2015 at 10:06
• Thanks for your reply. What I observed during booting was as follows: 1. power on (red indicator light on, green light flashes twice). 2. red light is still on, and the green light is off. 3. rainbow screen on the monitor. 4. safe mode that shows the message above immediately after the rainbow screen. The formatted SD card should be okay because the card works on another Pi of mine. – pohe Commented Feb 5, 2015 at 14:20

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2 Answers 2

Sorted by: Reset to default Highest score (default) Date modified (newest first) Date created (oldest first) 4

I had the same problem that wasn't fixed by adding avoid_safe_mode. It was fixed by adding disablesafemode to the end of recovery.cmdline (in the RECOVERY partition).

My recovery.cmdline for reference:

quiet vt.cur_default=1 elevator=deadline disablesafemode Share Improve this answer Follow answered May 15, 2015 at 0:13 vierjavierja 14122 bronze badges Add a comment | -1

Have you got a case with a fan built into it, or any other device connected to the GPIOs pins? I have this problem with my Raspberry Pi 2, I have to disconnect the fan to boot it up then attach the fan back onto the GPIOs pins when it is booted up. Have you tried removing all peripherals from your Pi before booting?

Share Improve this answer Follow edited Apr 2, 2015 at 9:11 sctjkc01 31611 gold badge33 silver badges1010 bronze badges answered Mar 29, 2015 at 16:58 user28481user28481 11 1

• Why do you think it would be a problem of fans? – Bex Commented Mar 30, 2015 at 5:34

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