Public bug reported:
At boot time there are many periods when the boot freezes before the timeout of
10 seconds.
In total it is 198 seconds that are lost in these timeouts during boot, more
than 3 minutes!
Regression is present since linux kernel 4.8 with Ubuntu 16.04
To fix, explicitly disable the port with an i915 module setting with
video=SVIDEO-1:d in the kernel command line parameter in the bootloader.
1/ sudo gedit /etc/default/grub
2/ add "video=SVIDEO-1:d" to "GRUB_CMDLINE_LINUX_DEFAULT" line
3/ sudo update-grub
After applying this, the system boots up much faster, there are no "drm
... timed out" messages.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: gm965 i915
** Attachment added: "dmesg Ubuntu 18.04 with Intel Mobile GM965/GL960
Integrated Graphics"
https://bugs.launchpad.net/bugs/1767808/+attachment/5130165/+files/201804_ubuntu1804_kernel_4.15.txt
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https://bugs.launchpad.net/bugs/1767808
Title:
"drm timed out" with driver i915 + Intel Mobile GM965/GL960 Integrated
Graphics with Kernel 4.15
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