Thank you for taking the time to report this bug and helping to make Ubuntu better. Reviewing your dmesg attachment to this bug report it seems that there may be a problem with your hardware. I'd recommend performing a back up and then investigate the situation. Measures you might take include checking cable connections and using software tools to investigate the health of your hardware. Thanks and good luck!
Thank you for taking the time to report this bug and helping to make Ubuntu better. Reviewing your dmesg attachment to this bug report it seems that there may be a problem with your hardware. I'd recommend performing a back up and then investigate the situation. Measures you might take include checking cable connections and using software tools to investigate the health of your hardware. Thanks and good luck!