exanimas Posted November 29, 2013 Share Posted November 29, 2013 Hey everyone, I'm having a weird issue with my PC. I have it hooked up to a monitor via DVI cable and a Samsung TV with an HDMI cable (30ft, cheap, bought on Amazon). Whenever I switch to Duplicate the screens, the computer will randomly drop the Wifi connection and everything internet related will run slow. I tried running a speed test to compare before switching to duplicate and after, but the speed test won't even run when the monitors are duplicated. To make things more confusing, I had this issue a few weeks ago, but it just went away on its own. The other night while watching something on Netflix, it came back and hasn't gone away since. I have tried updating the video card drivers, but I'm not sure what else to even try. Could it be the HDMI cable itself? The computer is an HP p7-1254 and the video card is an AMD HD7700. Any help or advice would be appreciated Link to comment https://www.neowin.net/forum/topic/1190577-computer-loses-wifi-when-hdmi-is-enabled/ Share on other sites More sharing options...
chrisj1968 Posted November 29, 2013 Share Posted November 29, 2013 might be a driver issue. I would bet it is the drivers. look to the AMD support site for drivers or if this issue is present. Link to comment https://www.neowin.net/forum/topic/1190577-computer-loses-wifi-when-hdmi-is-enabled/#findComment-596135581 Share on other sites More sharing options...
exanimas Posted December 1, 2013 Author Share Posted December 1, 2013 Thanks. I've updated the drivers (a few times since this issue came up) and that hasn't seemed to resolve it yet. Link to comment https://www.neowin.net/forum/topic/1190577-computer-loses-wifi-when-hdmi-is-enabled/#findComment-596139691 Share on other sites More sharing options...
Arachno 1D Posted December 1, 2013 Share Posted December 1, 2013 Did you check all power connections and card are inserted correctly? Link to comment https://www.neowin.net/forum/topic/1190577-computer-loses-wifi-when-hdmi-is-enabled/#findComment-596139819 Share on other sites More sharing options...
TomJones Posted December 1, 2013 Share Posted December 1, 2013 HDMI 1.4 has provisions for carrying Fast Ethernet over the HDMI cable. If there is a bug in your graphics driver or in the TV firmware, then your computer's network connection might be rerouted through the TV. You should definitely try using a different cable, in case there's a short in the cable. You should also update your TV's firmware. You could also try various combinations of TVs, monitors, and computers, to track down with one runs into the problem. There's also a hardware workaround that you might try. If you put electrical tape over pins 14 and 19 of the HDMI connector, then this would block the Ethernet signal. Link to comment https://www.neowin.net/forum/topic/1190577-computer-loses-wifi-when-hdmi-is-enabled/#findComment-596139857 Share on other sites More sharing options...
cybertimber2008 Posted December 1, 2013 Share Posted December 1, 2013 IRQ conflict between HDMI and Network? Traffic from one is interrupting the other? Link to comment https://www.neowin.net/forum/topic/1190577-computer-loses-wifi-when-hdmi-is-enabled/#findComment-596139859 Share on other sites More sharing options...
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