我也遇到了。华擎j3455的小板子。918的6.2.1和6.2.2都遇到了同样的问题。确定vid和pid是对的。 后来把bios从1.6升级到了1.8，把bios里的csm设置修改为传统，然后再次引导后，通过群晖助手软件直接安装dsm而不是通过web上传，然后就ok了。 升级bios的可能性大一些。
synoboot-ds918-1.04b-extra918plus_v0.8_syno synoboot-ds918-1.04b-extra918plus_v0.8_std synoboot-ds918-1.04b-extra918plus_v0.8_recovery 有啥区别
1. "syno" - all extended i915 stuff removed and some firmware added to max compatibility, mainly for "iGPU gen9" (Skylake, Apollo Lake and some Kaby Lake) and older and cases where std did not work, i915 driver source date: 20160919, positive feedback for J3455 and J1800 2. "std" - with jun's i915 driver from 1.04b (tested for coffee lake cpu from q2/2018), needed for anything newer then kaby lake like gemini lake, coffee lake, cannon lake, ice lake, i915 driver source date: 20180514 - as i had no source i915 driver is the same binary as in jun's original extra/extra2, on my system its working with a G5400, not just /dev/dri present, tested completely with really transcoding a video, so its working in general but might fail in some(?) cases, also 8th/9th gen cpu like i3/i5 8100/9400 produce a /dev/dri, tested with a 9400 and it does work 3. "recovery" - mainly for cases where the system stops booting because of i915 driver (seen on N3150 braswell), it overwrites all gpu drivers and firmware with files of 0 size on booting so they can't be loaded anymore, should also work for any system above but guarantees not having /dev/dri as even the firmware used from the dsm's own i915 driver is invalid (on purpose) - if that does not work its most likely a network driver problem, safe choice but no transcoding support start with syno, then std and last resort would be recovery anything with a kernel driver oops in the log is a "invalid" as it will result in shutdown problems - so check /var/log/dmesg the often seen Gemini Lake GPU's might work with "std", pretty sure not with "syno", most (all?) testers with gemini lake where unsuccessful with "std" so if you don't like experimenting and need hardware transcoding you should wait with the version you have the "_mod" on the end of the loader name below is a reminder that you need to to "modding" as in make sure you have zImage and rd.gz from DSM 6.2.2 on you usb for booting, the new extra.lzma will not work with older files 自己翻译一下吧。。。。。
