Dear Ken, I have gone through this situation several times, most of the cases i found the image is faulty (bit missing / burning error / SD card issue). I always like to have couple of extra adapter. In any urgent case they prove themselves worthless. On Sat, Mar 16, 2019 at 7:22 PM Pablo Sebastián Greco < pablo at fliagreco.com.ar> wrote: > > El 15/3/19 a las 20:52, Gordan Bobic escribió: > > Most of these adapters have various compatibility issues. I went > > through about 4 before I found one that allowed my laptop to talk to > > the monitor I wanted to attach to it. Some of the adapters worked on > > one machine, but not on others, going to the same monitor. I don't > > know what causes these sorts of compatibility issues but it's not > > specific to the Pi, it happens all over the place on all sorts of > > devices, both high end and low end. > As Gordan said, compatibility will always be an issue, but if you want > to continue playing with it, I'd start replacing the bootfiles (and > maybe playing with config.txt, cmdline.txt) > > > > > > On Fri, Mar 15, 2019 at 11:10 PM kht-lists <kht-lists at protonmail.ch > > <mailto:kht-lists at protonmail.ch>> wrote: > > > > I downloaded the referenced image a couple of days ago, burned it > > to a 16 GB SD card and booted my Pi 3B+. Fantastic! The Pi was > > connected with a HDMI to DVI cable to a Dell 19" monitor. > > > > I received in the mail a couple of HDMI to VGA adapters. The $4 > > generic ones which are all over ebay. I have several which I have > > purchased over the years and the generally work fine. > > adapter.png > > > > I decided to test the new adapters with the Pi. I connected one > > to the Pi and to a VGA cable to the same monitor (which has two > > inputs). I had NO video. No rainbow screen, no 4 raspberries > > screen, not test. Same for the second adapter. I tested the > > adapters on an Intel based PC. They worked fine. But it gets > > stranger... I booted the same Pi, same new adapter, connected to > > the same monitor from an Ubuntu SD card. The video was fine! And > > stranger still... I tried 3 older adapters with the Pi, CentOS and > > the same cable and monitor. The video was again fine! > > > > These adapters have no manufacturer markings. They probably all > > came from the same factory in China. Obviously something changed > > in the devices and I do not expect to ever be able to figure that > > out. However, something is also different in the video (driver I > > guess?) signal from the Pi with CentOS vs. Ubuntu. Can someone > > shed any light on this mystery? > > > > TIA, > > > > Ken > > > > > > > > Sent with ProtonMail <https://protonmail.com> Secure Email. > > > > _______________________________________________ > > Arm-dev mailing list > > Arm-dev at centos.org <mailto:Arm-dev at centos.org> > > https://lists.centos.org/mailman/listinfo/arm-dev > > > > > > _______________________________________________ > > Arm-dev mailing list > > Arm-dev at centos.org > > https://lists.centos.org/mailman/listinfo/arm-dev > _______________________________________________ > Arm-dev mailing list > Arm-dev at centos.org > https://lists.centos.org/mailman/listinfo/arm-dev > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/arm-dev/attachments/20190317/69829489/attachment-0006.html>