src/source/known-issues.md

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# Known Issues #

Even with our best care, small problems sometimes slip in. This page keeps
track of the known issues around using the Android source code.

## Black Gingerbread Emulator ##

**Symptom**: The emulator built directly from the gingerbread branch
doesn't start and stays stuck on a black screen.

**Cause**: The gingerbread branch uses version R7 of the emulator,
which doesn't have all the features necessary to run recent versions
of gingerbread.

**Fix**: Use version R12 of the emulator, and a newer kernel that matches
those tools. No need to do a clean build.

    $ repo forall external/qemu -c git checkout aosp/tools_r12
    $ make
    $ emulator -kernel prebuilt/android-arm/kernel/kernel-qemu-armv7