I can confirm that the workaround from @psequeirag works. (Nexus 4 here)
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Title:
No SIM card deteced for UBuntu Touch when dual booting with
Btw: i am not using any multi boot. just single boot ubuntu 14.04 on
nexus 4.
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https://bugs.launchpad.net/bugs/1371332
Title:
No SIM card deteced for UBuntu Touch when dual booting
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ubuntu-touch-meta (Ubuntu)
Status: New = Confirmed
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This happens to me as well (Nexus4, dual boot from dev channel).
To work around this, I have to execute the following commands:
/usr/share/urfkill/scripts/flight-mode 1 # turn on flight mode
/usr/share/urfkill/scripts/flight-mode 0 # turn off flight mode
After this, the phone may no