Article 4V76P Screen goes black during boot. [Slackware 14.2, and kernel 4.4.172-smp or newer.]

Screen goes black during boot. [Slackware 14.2, and kernel 4.4.172-smp or newer.]

by
baumei
from LinuxQuestions.org on (#4V76P)
Hi Folks,

I run Slackware 14.2, either 64-bit or 32-bit as appropriate for the hardware. I use the kernel package sets which are released by Mr. Volkerding.

In 2019/Feb I reported finding a computer which worked fine with kernel 4.4.157-smp (32-bit) --- but with kernel 4.4.172-smp (32-bit) the screen would go black when the console switched from 'normal' to 'frame-buffer'. This computer is an ASUS Eee PC 1005HAB.
https://www.linuxquestions.org/quest...ch-4175649029/

In 2019/Jun "badbetty" reported the same problem, but with the 64-bit kernels in Slackware64 14.2, on an ASUS Eee PC 1225b.
https://www.linuxquestions.org/quest...ot-4175656203/

In 2019/Oct "poetgrant" reported the same problem, also on an ASUS Eee PC 1005HAB.
https://www.linuxquestions.org/quest...te-4175663138/

In 2019/Nov I found this problem also exists on an ASUS Eee PC 1025c. The 1025c is about two years newer than the 1005HA, and it has: a different chipset, a different video 'card', and a different BIOS.

This display problem came to be with one of the kernels between 4.4.157 and 4.4.172 --- "badbetty" found that for the 64bit kernels the problem is related to something between the kernel and the asus-wmi module. I gather she was going to attempt to report the problem upstream, but I do not know whether she was able to do so.

There has been no display problem with all the 4.19.x-smp 32-bit kernels which I have tried.

Does anyone know of other models of computer which exhibit this problem?

----

LQ member "abga" has an Acer Aspire One, the hardware of which is quite similar to the ASUS Eee PC 1005HAB, and the video
"works flawless".
https://www.linuxquestions.org/quest...ml#post6052409latest?d=yIl2AUoC8zA latest?i=dzYGxexWvcU:eJLamwGTq3Q:F7zBnMy latest?i=dzYGxexWvcU:eJLamwGTq3Q:V_sGLiP latest?d=qj6IDK7rITs latest?i=dzYGxexWvcU:eJLamwGTq3Q:gIN9vFwdzYGxexWvcU
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