Can you please share more details about the mining hardware you are using? The log file indicates "AMD Radeon 6540A", but that's a very old laptop GPU with only 0.5GB memory (may not be usable for mining).
To correct the connection error message you see in the log file, please go to the Awesome Miner Options dialog, Managed Hosts, modify the host representing your Linux system. Please check the box for "Remote Agent for Linux".