Hello, The resolution to the dual HDMI problem was to upgrade to CentOS 7.5. All CentOS versions from 7.5 to 8.1 work with no problems. Thank you for your help. Regards, Mark Woolfson MW Consultancy Ltd Leeds LS18 4LY United Kingdom Tel: +44 113 259 1204 Mob: +44 786 065 2778 -----Original Message----- From: Fleur Sent: Saturday, January 18, 2020 12:44 PM To: CentOS mailing list Subject: Re: [CentOS] Twin HDMI Hi John, why not try something newer than CentOS 6.8 ? Maybe not the latest 8.1 but 7.7 is quite recent and stable. Your (integrated) video card is : Intel® HD Graphics 605 (NUC7PJYH) Intel NUC7PJYH seems to be able to pilot Dual 4K display : " ...The NUC7PJYH kit also comes with dual Ultra HD 4K display support via two full-sized HDMI* ports, consumer infrared, and a TOSLINK audio jack, they’ve got everything they need to stream media, play, or finish that last-minute presentation. And with 3.2x better graphics,3 2 you can create robust entry-level digital signage at entry-level prices for your SMB customers." [ https://www.intel.it/content/www/it/it/products/docs/boards-kits/nuc/nuc7cjyh-nuc7pjyh-nuc7cjys-brief.html ] First step is to post here the output of "hwinfo --gfxcard" Some useful info is published here (sorry not CentOS related) https://wiki.archlinux.org/index.php/Hardware_video_acceleration#Intel Cheers Fleur Il giorno sab 18 gen 2020 alle ore 01:07 John Pierce <jhn.pierce at gmail.com> ha scritto: > > On Fri, Jan 17, 2020 at 8:53 AM Mark (Netbook) <mrw at mwcltd.co.uk> wrote: > > > I have an Intel NUC7PJYH running CentOS 6.8. This is a NUC with standard > > USB, 1GbE and 2*HDMI. > > > FWIW, that has a Pentium Silver J2005, which has Intel® UHD Graphics 605 > > thats fairly new stuff, and centos 6 is pretty old now. > > -- > -john r pierce > recycling used bits in santa cruz > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos _______________________________________________ CentOS mailing list CentOS at centos.org https://lists.centos.org/mailman/listinfo/centos