[Fire HD 8 and HD 10 Original Android Development] GoodSoul:
Adb logcat shows (permanently) crashing mediaserver:

11-27 23:54:31.380 8802 8802 F libc : Fatal signal 11 (SIGSEGV), code 1, fault addr 0x54 in tid 8802 (mediaserver)
11-27 23:54:31.380 192 192 W : debuggerd: handling request: pid=8802 uid=1013 gid=1005 tid=8802
11-27 23:54:31.447 8812 8812 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-27 23:54:31.447 8812 8812 F DEBUG : LineageOS Version: '14.1-20201126-UNOFFICIAL-douglas'
11-27 23:54:31.447 8812 8812 F DEBUG : Build fingerprint: 'Amazon/cm_douglas/douglas:7.1.2/NJH47F/3feda29ce4:userdebug/test-keys'
11-27 23:54:31.447 8812 8812 F DEBUG : Revision: '0'
11-27 23:54:31.447 8812 8812 F DEBUG : ABI: 'arm'
11-27 23:54:31.447 8812 8812 F DEBUG : pid: 8802, tid: 8802, name: mediaserver >>> /system/bin/mediaserver <<<
11-27 23:54:31.447 8812 8812 F DEBUG : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x54
11-27 23:54:31.447 8812 8812 F DEBUG : r0 00000000 r1 00000003 r2 ffb56404 r3 f6ac6a65
11-27 23:54:31.447 8812 8812 F DEBUG : r4 f5fcffc0 r5 f3149184 r6 00000000 r7 00000001
11-27 23:54:31.447 8812 8812 F DEBUG : r8 00000000 r9 00000000 sl 00000000 fp ffb56510
11-27 23:54:31.447 8812 8812 F DEBUG : ip f314b834 sp ffb563e8 lr f3135b9d pc f6ac6a6c cpsr 000f0030
11-27 23:54:31.452 8812 8812 F DEBUG :
11-27 23:54:31.452 8812 8812 F DEBUG : backtrace:
11-27 23:54:31.452 8812 8812 F DEBUG : #00 pc 0005da6c /system/lib/libcameraservice.so
11-27 23:54:31.452 8812 8812 F DEBUG : #01 pc 00014b9b /system/lib/libcam.client.so (_ZN7android15NSDisplayClient13DisplayClient15restoreBufCountEv+18)
11-27 23:54:31.452 8812 8812 F DEBUG : #02 pc 000150f1 /system/lib/libcam.client.so (_ZN7android15NSDisplayClient13DisplayClient6uninitEv+24)
11-27 23:54:31.452 8812 8812 F DEBUG : #03 pc 00008d19 /system/lib/libcam.device1.so (_ZN7android14Cam1DeviceBase17initDisplayClientEP18preview_stream_ops+56)
11-27 23:54:31.452 8812 8812 F DEBUG : #04 pc 0000775b /system/lib/libcam.device1.so (_ZN7android14Cam1DeviceBase16setPreviewWindowEP18preview_stream_ops+34)
11-27 23:54:31.452 8812 8812 F DEBUG : #05 pc 0005ce7b /system/lib/libcameraservice.so (_ZN7android35CameraHardwareInterfaceFlashControl22disconnectCameraDeviceEv+138)
11-27 23:54:31.452 8812 8812 F DEBUG : #06 pc 0005d05d /system/lib/libcameraservice.so (_ZN7android35CameraHardwareInterfaceFlashControl18hasFlashUnitLockedERKNS_7String8EPbb+100)
11-27 23:54:31.453 8812 8812 F DEBUG : #07 pc 0005d101 /system/lib/libcameraservice.so (_ZN7android35CameraHardwareInterfaceFlashControl12hasFlashUnitERKNS_7String8EPb+28)
11-27 23:54:31.453 8812 8812 F DEBUG : #08 pc 0005bf41 /system/lib/libcameraservice.so (_ZN7android16CameraFlashlight14findFlashUnitsEv+140)
11-27 23:54:31.453 8812 8812 F DEBUG : #09 pc 0004ff13 /system/lib/libcameraservice.so (_ZN7android13CameraService10onFirstRefEv+302)
11-27 23:54:31.453 8812 8812 F DEBUG : #10 pc 00000eb3 /system/bin/mediaserver
11-27 23:54:31.453 8812 8812 F DEBUG : #11 pc 00000d47 /system/bin/mediaserver
11-27 23:54:31.453 8812 8812 F DEBUG : #12 pc 00016ca1 /system/lib/libc.so (__libc_init+48)
11-27 23:54:31.453 8812 8812 F DEBUG : #13 pc 00000c2c /system/bin/mediaserver
11-27 23:54:31.603 584 767 W NativeCrashListener: Couldn't find ProcessRecord for pid 8802
11-27 23:54:31.603 8802 8808 D AMZ-lsc_mgr2_thread: [changeThreadSetting] sensor(1), tid(8808), policy:(expect, result)=(0, 0), priority:(expect, result)=(0xfffffffd, 0xfffffffd)
11-27 23:54:31.603 8802 8808 D AMZ-lsc_mgr2_thread: [doThreadFunc +]
11-27 23:54:31.606 584 622 I BootReceiver: Copying /data/tombstones/tombstone_02 to DropBox (SYSTEM_TOMBSTONE)
11-27 23:54:31.613 192 192 W : debuggerd: resuming target 8802
11-27 23:54:31.616 288 288 I ServiceManager: service 'media.player' died
11-27 23:54:31.616 288 288 I ServiceManager: service 'media.resource_manager' died
11-27 23:54:32.240 584 618 I CameraManagerGlobal: Connecting to camera service
11-27 23:54:32.240 584 618 E CameraManagerGlobal: Camera service is unavailable
11-27 23:54:32.240 584 618 I CameraManagerGlobal: Connecting to camera service
11-27 23:54:32.241 584 618 E CameraManagerGlobal: Camera service is unavailable
11-27 23:54:33.242 584 618 I CameraManagerGlobal: Connecting to camera service
11-27 23:54:33.242 584 618 E CameraManagerGlobal: Camera service is unavailable
11-27 23:54:33.242 584 618 I CameraManagerGlobal: Connecting to camera service
11-27 23:54:33.243 584 618 E CameraManagerGlobal: Camera service is unavailable
11-27 23:54:33.431 5053 5053 I Thread-12: type=1400 audit(0.0:284): avc: denied { read } for name="FG_Battery_CurrentConsumption" dev="sysfs" ino=19392 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:sysfs:s0 tclass=file permissive=1
11-27 23:54:33.431 5053 5053 I Thread-12: type=1400 audit(0.0:285): avc: denied { open } for path="/sys/devices/platform/battery/FG_Battery_CurrentConsumption" dev="sysfs" ino=19392 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:sysfs:s0 tclass=file permissive=1
11-27 23:54:33.431 5053 5053 I Thread-12: type=1400 audit(0.0:286): avc: denied { getattr } for path="/sys/devices/platform/battery/FG_Battery_CurrentConsumption" dev="sysfs" ino=19392 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:sysfs:s0 tclass=file permissive=1
11-27 23:54:34.244 584 618 I CameraManagerGlobal: Connecting to camera service
11-27 23:54:34.244 584 618 E CameraManagerGlobal: Camera service is unavailable
11-27 23:54:34.244 584 618 I CameraManagerGlobal: Connecting to camera service
11-27 23:54:34.245 584 618 E CameraManagerGlobal: Camera service is unavailable
11-27 23:54:34.943 8818 8818 I mediaserver: ServiceManager: 0xf5e90520
11-27 23:54:34.944 8818 8818 I CameraService: CameraService started (pid=8818)
11-27 23:54:34.945 8818 8818 I CameraService: CameraService process starting
11-27 23:54:35.166 8818 8818 D AMZ-IspDrv: [IspDrvImp] getpid[0x00002272],gettid[0x00002272]

Besides that: A very snappy, fast nice ROM. Awesome work [MENTION=8978978]Rortiz2[/MENTION] ! Did not test that much yet but I am already impressed by the speed compared to what I had installed before. Again, thanks.