Timeline for HDMI switcher causes screen to blink at 1440p on Windows
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| Feb 29, 2020 at 18:00 | history | tweeted | twitter.com/super_user/status/1233814369600974848 | ||
| Aug 5, 2015 at 22:55 | comment | added | Psycogeek | Which sounds like a monitors power problem, but it is assumed you testded that with just a single cable direct in your sanity check. There is a possibility for a power or ground problem causing tiny flows of power between 2 devices. Sometimes plugging everything into the same area can fix that (power strip), or checking how the wiring works at each plug in point with a simple plug in tester. but that should not be intermittant. Even a poorly isolated switching power supply. | |
| Aug 5, 2015 at 15:08 | comment | added | Hayden Schiff | Hmm, my cable is rather close to a wireless access point, but given that the issues don't occur with the laptop and don't occur when I connect the desktop to the monitor directly (no switch in-between), I'm less inclined to suspect that as the issue.... One thing worth noting -- when the video cuts out, it isn't just the signal that cuts out; the entire monitor seems to shut off for a moment. If I'm messing with the menus using the buttons on the monitor itself, the menu goes away too when it cuts out. | |
| Aug 5, 2015 at 7:22 | comment | added | Psycogeek | The other possibility that causes it to blip out of operation at regular or random intervals, is if the cable itself (and box) had an outside interferance occuring. (and it is close to failing) A cell phone wi-fi signal, or even a very very close to the cable wireless input device or bluetooth. That is where ferrite beads on the cable might add a bit of help in reducing outside interferance. | |
| Aug 5, 2015 at 7:20 | comment | added | Psycogeek | Digital is usually an all or nothing thing. either it works or it doesnt at all, something has to be right on the edge of fail to glitch like that. the HDMI out of a computer is fully uncompressed blaze of data. If the wires total were to long for the wire quality, or the box was electronic switching type and not built well, it could cause that. One shorter good quality cable to the switch box would change any cable lenght issues a lot. A cheap manually switching video switch box, could be more simple and raw direct. | |
| Aug 5, 2015 at 4:22 | comment | added | Psycogeek | Ok now that is very clear. continually, never stops blinking, stays messed up ever after :-) Got it. | |
| Aug 5, 2015 at 4:15 | comment | added | Hayden Schiff | @Psycogeek Sorry, perhaps my explanation wasn't clear. The signal doesn't just cut out while it's switching; it cuts off again and again every couple of seconds as long as I'm switched to my desktop. | |
| Aug 4, 2015 at 23:35 | comment | added | Psycogeek | This is pretty much expected behaviour, Wouldn't the same thing occur if you manually switched the cables, as opposed to using a switch box? | |
| Aug 4, 2015 at 22:58 | history | asked | Hayden Schiff | CC BY-SA 3.0 |