From mboxrd@z Thu Jan 1 00:00:00 1970 From: jbrunet@baylibre.com (Jerome Brunet) Date: Tue, 05 Jun 2018 18:07:41 +0200 Subject: Odroid-C2 solid green screen on "echo c > /proc/sysrq-trigger" on Arch 4.16/4.17rc6 In-Reply-To: References: <84bc747f58f648e1b209bc0005804bc5@wppexc12.purdue.lcl> <5d1512ae-51eb-7e05-ad8b-b8e851aee90e@baylibre.com> <1a951abcb7be4e93945613afcdcd96f3@wppexc12.purdue.lcl> <1f8eaec9-e3a2-1b9b-1cef-ed3567a96aa2@baylibre.com> <179a8a16-30a9-73fc-7f07-beeab3a981dc@poczta.onet.pl> <176f036c3d2f49a4b5bde68bdee68e6a@wppexc12.purdue.lcl> <6353008e-35a9-bb3e-f52c-97191ddb60a3@baylibre.com> Message-ID: <1528214861.10642.59.camel@baylibre.com> To: linus-amlogic@lists.infradead.org List-Id: linus-amlogic.lists.infradead.org On Tue, 2018-06-05 at 13:48 +0000, Swabey, Matthew A wrote: > I'm not happy with the Raspberry Pi 3B, never really have been happy with any of their products due to their weird bootloader (just google netbooting Rpis - their implementation is badly broken), their overall hardware architecture etc. I much prefer the Odroid-c2, except for the 3.14 kernel. So when it went mainline I was very happy. > > However the reboot-greenscreen is problematic for my usecase, and I believe indicative of a possible race somewhere in the software stack, probably bootloader. I don't think so. My guess would be that your screen somehow read raw '0x00' on link while the board resets. If your display is configured in YUV mode, you would see a green screen. 0,0,0 is green in YUV If you were using RGB instead YUV, I suspect you would have a black screen, which is sad compared to 'funky green' but it is matter of taste I suppose.