This is a technical problem I have been experiencing for some time, but have only just solved. Web searches revealed that a lot of people have this problem, but I was not able to find a solid solution. So, I’m posting my solution here to my blog so that maybe somebody else can find it.<\/p>\n\n\n\n
I have two external monitors attached to my Windows laptop through a docking station. For a long time, both monitors were identical (Dell S2415H) 24″ 1920×1080 flat screen monitors. Then I saw a larger (Acer EB321HQU) 31.5″ 2560×1440 flat screen monitor on sale for a really good price. The Acer is almost comically large for my desk, especially with it looming over my normal-sized laptop.<\/p>\n\n\n\n
Now, both monitors have always been connected to the docking station using HDMI cables, but the docking station only has one HDMI jack and two DisplayPort jacks. I have the Acer monitor connected to the one HDMI jack, and connect the Dell monitor through an HDMI to DP adapter.<\/p>\n\n\n\n
Video on the Dell monitor “jitters”. Moving windows around creates “ghost” images on the display. The second monitor was basically unusable in this state. Now I thought<\/strong> that the problem was caused by the HDMI-DP adapter, but switching the connections around did not make any difference. The Dell always jittered, even if it was connected directly with the Acer on the adapter.<\/p>\n\n\n\n I did not have this problem when I was using the two identical Dell monitors. I could not figure out what was causing the problem, so I stopped using the Dell monitor with my personal laptop, and connected it full time to my work laptop.<\/p>\n\n\n\n Open the Display Settings dialog, and select the jittery monitor. Open the “Advanced display settings” for the jittery monitor, and choose a different frequency from the “Refresh rate” menu. That’s it!<\/p>\n\n\n\n The jitter problem seems to have been caused by a refresh rate mismatch between the two monitors. The Acer recommends a refresh rate of 59.940 Hz, so having the Dell configured for a different rate was a problem.<\/p>\n\n\n\n Syncing the two rates solved the problem. No more jitters!<\/p>\n\n\n\n Something about my hardware setup is unable to support the Acer monitor at full resolution with a second monitor. It’s probably a limitation of the video hardware in my laptop. For now, I am back to “just” the one (giant) external monitor. I know, “Qu\u00e9 l\u00e1stima<\/em><\/bdo>” she said.<\/p>\n","protected":false},"excerpt":{"rendered":" This is a technical problem I have been experiencing for some time, but have only just solved. Web searches revealed that a lot of people have this problem, but I was not able to find a solid solution. So, I’m posting my solution here to my blog so that maybe somebody else can find it. […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[780,778,779,55],"class_list":["post-1341","post","type-post","status-publish","format-standard","hentry","category-oversharing","tag-jitters","tag-problems","tag-tech-support","tag-windows"],"_links":{"self":[{"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/posts\/1341","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/comments?post=1341"}],"version-history":[{"count":4,"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/posts\/1341\/revisions"}],"predecessor-version":[{"id":1346,"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/posts\/1341\/revisions\/1346"}],"wp:attachment":[{"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/media?parent=1341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/categories?post=1341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ee0r.com\/blog-new\/wp-json\/wp\/v2\/tags?post=1341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}The Solution<\/h2>\n\n\n\n
The Catch<\/h2>\n\n\n\n