I am getting seemingly random crashes of X. I have 3 monitors (2 external, 1 laptop), and occasionally they will flash black, and orientation gets reset to default. I have not been able to find any action that specifically triggers this, although when i look at dmesg, it seems to somehow be relate to my wifi. I have pasted (what I think) are the relevant bits of dmesg below, please let me know if I should provide more info. dmesg first instance: -------------------- [14198.890344] bridge-wlan2: device is wireless, enabling SMAC [14198.890348] bridge-wlan2: up [14198.890353] bridge-wlan2: attached [14198.930206] wlan2: Limiting TX power to 30 (30 - 0) dBm as advertised by 80:ea:96:ee:dd:0a [14199.090477] userif-3: sent link down event. [14199.090481] userif-3: sent link up event. [16815.766004] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [16815.766009] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun [16815.767229] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A [16815.767234] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun [17129.902962] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [17129.902966] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun [17129.917635] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A [17129.917639] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun [17197.888252] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [17197.888256] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun [17197.898583] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A [17197.898588] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun [17553.192289] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [17553.192294] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun [17553.196104] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A [17553.196108] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun dmesg second instance: --------------------- [20155.260197] /dev/vmnet: port on hub 0 successfully opened [20155.260206] bridge-wlan2: device is wireless, enabling SMAC [20155.261377] bridge-wlan2: up [20155.261422] bridge-wlan2: attached [20155.341711] wlan2: Limiting TX power to 30 (30 - 0) dBm as advertised by 80:ea:96:ee:dd:0a [20155.411171] userif-3: sent link down event. [20155.412149] userif-3: sent link up event. [20416.556616] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [20416.556621] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun [20416.556772] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A [20416.556775] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun [21122.359725] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [21122.359729] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun [21122.369766] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A [21122.369771] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun [22666.750046] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [22666.750050] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun [22666.751890] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A [22666.751893] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun [22988.645046] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [22988.645050] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun [22988.645987] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A [22988.645989] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun
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