This is report from script which checks kernel config for compatibility with docker.
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info: reading kernel config from linux.arm.conf ...
Generally Necessary:
- cgroup hierarchy: properly mounted [/sys/fs/cgroup]
- CONFIG_NAMESPACES: enabled
- CONFIG_NET_NS: enabled
- CONFIG_PID_NS: enabled
- CONFIG_IPC_NS: enabled
- CONFIG_UTS_NS: enabled
- CONFIG_CGROUPS: enabled
- CONFIG_CGROUP_CPUACCT: enabled
- CONFIG_CGROUP_DEVICE: enabled
- CONFIG_CGROUP_FREEZER: enabled
- CONFIG_CGROUP_SCHED: enabled
- CONFIG_CPUSETS: enabled
- CONFIG_MEMCG: enabled
- CONFIG_KEYS: enabled
- CONFIG_VETH: enabled (as module)
- CONFIG_BRIDGE: enabled (as module)
- CONFIG_BRIDGE_NETFILTER: enabled (as module)
- CONFIG_NF_NAT_IPV4: enabled (as module)
- CONFIG_IP_NF_FILTER: enabled (as module)
- CONFIG_IP_NF_TARGET_MASQUERADE: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_ADDRTYPE: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_CONNTRACK: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_IPVS: enabled (as module)
- CONFIG_IP_NF_NAT: enabled (as module)
- CONFIG_NF_NAT: enabled (as module)
- CONFIG_NF_NAT_NEEDED: enabled
- CONFIG_POSIX_MQUEUE: enabled
Optional Features:
- CONFIG_USER_NS: enabled
- CONFIG_SECCOMP: enabled
- CONFIG_CGROUP_PIDS: enabled
- CONFIG_MEMCG_SWAP: enabled
- CONFIG_MEMCG_SWAP_ENABLED: enabled
(cgroup swap accounting is currently enabled)
- CONFIG_BLK_CGROUP: enabled
- CONFIG_BLK_DEV_THROTTLING: enabled
- CONFIG_IOSCHED_CFQ: missing
- CONFIG_CFQ_GROUP_IOSCHED: missing
- CONFIG_CGROUP_PERF: enabled
- CONFIG_CGROUP_HUGETLB: missing
- CONFIG_NET_CLS_CGROUP: enabled
- CONFIG_CGROUP_NET_PRIO: enabled
- CONFIG_CFS_BANDWIDTH: enabled
- CONFIG_FAIR_GROUP_SCHED: enabled
- CONFIG_RT_GROUP_SCHED: enabled
- CONFIG_IP_NF_TARGET_REDIRECT: enabled (as module)
- CONFIG_IP_VS: enabled (as module)
- CONFIG_IP_VS_NFCT: enabled
- CONFIG_IP_VS_PROTO_TCP: enabled
- CONFIG_IP_VS_PROTO_UDP: enabled
- CONFIG_IP_VS_RR: enabled (as module)
- CONFIG_EXT4_FS: enabled
- CONFIG_EXT4_FS_POSIX_ACL: enabled
- CONFIG_EXT4_FS_SECURITY: enabled
- Network Drivers:
- "overlay":
- CONFIG_VXLAN: enabled (as module)
Optional (for encrypted networks):
- CONFIG_CRYPTO: enabled
- CONFIG_CRYPTO_AEAD: enabled (as module)
- CONFIG_CRYPTO_GCM: enabled (as module)
- CONFIG_CRYPTO_SEQIV: enabled (as module)
- CONFIG_CRYPTO_GHASH: enabled (as module)
- CONFIG_XFRM: enabled
- CONFIG_XFRM_USER: enabled
- CONFIG_XFRM_ALGO: enabled
- CONFIG_INET_ESP: enabled (as module)
- CONFIG_INET_XFRM_MODE_TRANSPORT: enabled (as module)
- "ipvlan":
- CONFIG_IPVLAN: enabled (as module)
- "macvlan":
- CONFIG_MACVLAN: enabled (as module)
- CONFIG_DUMMY: enabled (as module)
- "ftp,tftp client in container":
- CONFIG_NF_NAT_FTP: enabled (as module)
- CONFIG_NF_CONNTRACK_FTP: enabled (as module)
- CONFIG_NF_NAT_TFTP: enabled (as module)
- CONFIG_NF_CONNTRACK_TFTP: enabled (as module)
- Storage Drivers:
- "aufs":
- CONFIG_AUFS_FS: missing
- "btrfs":
- CONFIG_BTRFS_FS: missing
- CONFIG_BTRFS_FS_POSIX_ACL: missing
- "devicemapper":
- CONFIG_BLK_DEV_DM: missing
- CONFIG_DM_THIN_PROVISIONING: missing
- "overlay":
- CONFIG_OVERLAY_FS: enabled (as module)
- "zfs":
- /dev/zfs: missing
- zfs command: missing
- zpool command: missing
Limits:
- /proc/sys/kernel/keys/root_maxkeys: 1000000
I have a feeling that docker doesn't load modules if they are needed. Can you load all drivers on the list marked with "(as module)" and then check if it works for you?
Regarding sound, that's strange. I tested image and sound works ok.