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  1. chaihaixin

    (99% perfect) Sierra 10.12.6 on Thinkpad x1 carbon 5th-gen with dual-boot unchanged Win7

    Sorry no idea. If it can't work in Windows, less hope it will work in Mac. What you mean "not recognized" in windows? an unknown device in device manager or nothing new at all? Are the antenna correctly connected?
  2. chaihaixin

    (99% perfect) Sierra 10.12.6 on Thinkpad x1 carbon 5th-gen with dual-boot unchanged Win7

    this is the patch i chose. based on RehabMan's HDMI patch, adding eDP support, so far so good..
  3. chaihaixin

    (99% perfect) Sierra 10.12.6 on Thinkpad x1 carbon 5th-gen with dual-boot unchanged Win7

    1. change a high-quality HDMI cable ... (don't laugh, do introduce difference) 2. Found thinkpad x1c using eDP rather than LVDS, change HDMI patch 3. carefully follow the wonderful HDMI audio guide now it seems ok..
  4. chaihaixin

    (99% perfect) Sierra 10.12.6 on Thinkpad x1 carbon 5th-gen with dual-boot unchanged Win7

    i carefully choose the one with 2 cut-ins. Actually mine BCM94352z is DW1560 (from a DELL laptop) Have no idea whether the one with one cut-in work or not.
  5. chaihaixin

    [solved] unexpected reboot - how to track/debug?

    After complete remove VirtualBox and observed 5 days, no more unexpected reboot. Pls mark this thread SOLVED. thanks for your help.
  6. chaihaixin

    [solved] unexpected reboot - how to track/debug?

    Sorry. Re-generated & attached. thanks.
  7. chaihaixin

    [solved] unexpected reboot - how to track/debug?

    VirtualBox 100% removed , this issue remains. Since it's a working machine it's hard to have a fresh install, and i have to have necessary applications installed. PR attached. Thanks. Any hints?
  8. chaihaixin

    [solved] unexpected reboot - how to track/debug?

    Thank you. as always. However, virtualBox is not the root cause - previous clean install w/o virtualbox still has this issue. Just wondering how to track issue like this...
  9. chaihaixin

    [solved] unexpected reboot - how to track/debug?

    almost everything is working perfectly except when i leave the system idle for enough time (say, 30m or more), there is 50% chance it cause a sudden reboot without closing running apps correctly .. and i have no clue how to track/debug it. Native power management should be ok according to...
  10. chaihaixin

    No HDMI Video, or with HDMI Video/Audio but no internal display

    as title. typically when i plug HDMI, internal display goes off, and no HDMI video at all. when unplug-HDMI, the LCD remain off. Occasionally, there will be HDMI video+audio correctly, but internal LCD always off. Never success when plug HDMI during boot up, both screen remain off. Thinkpad x1c...
  11. chaihaixin

    X1 Carbon 2017 (5th) can't install High Sierra due to the SSD PM981

    not yet..observed different behavior on 2 type-C ports. continue digging.
  12. chaihaixin

    (99% perfect) Sierra 10.12.6 on Thinkpad x1 carbon 5th-gen with dual-boot unchanged Win7

    no i didn't. actually i switched to a new x1c 5th with i7 and HD620, 10.13.4 works well. Suggest you provide full Problem Report to seek help here.
  13. chaihaixin

    After update to 10.13.4, apple may have been repaired the pm981.

    Sadly say, no. a fresh install of 10.13.4 never success. :(
  14. chaihaixin

    (99% perfect) Sierra 10.12.6 on Thinkpad x1 carbon 5th-gen with dual-boot unchanged Win7

    thanks comment. Given currently this machine is my working machine, i didn't try further effort yet - means HDMI audio not work, Handoff not stable, trackpoint unstable...and fear to try High Sierra. :) would like resume this debug progress shortly and report back here.
  15. chaihaixin

    (99% perfect) Sierra 10.12.6 on Thinkpad x1 carbon 5th-gen with dual-boot unchanged Win7

    you will find BIOS/Post error if met whitelist issue..
  16. chaihaixin

    (99% perfect) Sierra 10.12.6 on Thinkpad x1 carbon 5th-gen with dual-boot unchanged Win7

    yes i replaced the wifi module to a BCM94352z. then everything looks ok, so far.
  17. chaihaixin

    [Guide] Creating a Custom SSDT for USBInjectAll.kext

    Without detail investigation, had thought those type-C should connect to TB3 controller, given they have display output capability in Windows - However, those ports also have USB capability, means TB3 control has its own USB implementation or somehow connect back to XHC? So the question becomes...
  18. chaihaixin

    [Guide] Intel IGPU HDMI/DP audio (all Sandy Bridge -> Kaby Lake [and likely later])

    Understand your suggestion. The @2 port didn’t connect to anything. Actually this laptop has 2 type-C TB and only one HDMI, no other display related port. Lenovo specs says it can connect to 3 displays at same time, means 2 TB+ 1 HDMI. After HDMI was detected on @1, I should remove @2...
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