[Bug 106182] [Intel NUC] HDMI1 sometimes stops working after resuming from s3 (a single monitor setup)

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu May 10 11:00:09 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=106182

--- Comment #32 from Robert Liu <tsunghanliu at gmail.com> ---
Re-run the stress test and make the issue happens.
Then use the commands in the comment #29.
The commands bring the screen back.

root at u-NUC7PJYH:~# v=$(outb 0x66 0x80; outb 0x62 0x1a; inb 0x62)
root at u-NUC7PJYH:~# echo $v
3
root at u-NUC7PJYH:~# outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $(( v | 9 ))
root at u-NUC7PJYH:~# outb 0x66 0x80; outb 0x62 0x1a; inb 0x62
11
root at u-NUC7PJYH:~#  
root at u-NUC7PJYH:~# sleep 0.1
root at u-NUC7PJYH:~# 
root at u-NUC7PJYH:~# outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $(( v | 1 ))
root at u-NUC7PJYH:~# outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $v
(screen is on)

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