Reply To: [SOLVED]: backlight-brightness: No controller found

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#61046
Brian Masinick
Moderator

    I remember you finding this on antiX 19.4 testing last month, but then I didn’t have time to help troubleshoot.

    The biggest problem you are having is that the i915 kernel driver is not loading properly. I recommend you to
    A. Try the antiX 19.4 edition with kernel 4.19 (better intel support) booting NORMALLY (NOT safe Video Mode or Failsafe).
    B. Try the current antiX 19.4 Live boot with the parameter
    i915.modeset=1 xorg=intel
    or just
    i915.modeset=1

    All packages are included in antiX 19.4 (no need for you to go through the same path you did last month), as I can confirm on my system, but sometimes you need to use one of the very convenient antiX Boot parameters. On one of my devices I need to boot with xorg=intel to boot to graphical interface with intel xorg driver (which they say is deprecated and it is better to use modesetting but it works for me).

    This fixed it, provided I booted the USB stick without UEFI. WITH either of the options and UEFI the system would hang within the first 30 seconds after login or less.

    After installation it also works, so that indicates that I must have built that one ISO image from a limited graphics mode because my antiX 19.3 and antiX a2 testing images also work.

    I’ll mark this solved.

    I’ll also correct my erroneous title. I found that the old kernel was unstable on my 64 bit system but other newer kernels have been up several hours, so I’m not going to file any defect. In the past I could run any kernel; that is no longer true. Anyway, the Backlight Brightness works on antiX 19.3, 19.4 and the current test release. SOLVED.

    --
    Brian Masinick
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