Stefan Dirsch
fac15e8a1f
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/nvidia-jetson?expand=0&rev=1
39 lines
1.5 KiB
Bash
39 lines
1.5 KiB
Bash
# Workaround needed to disable ast driver broken on aarch64
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pbl --add-option modprobe.blacklist=ast --config
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# serial console hangs with plymouth spending 100% CPU load if no
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# monitor is connected, so better disable plymouth; it never showed a logo
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# on Jetson anyway ...
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pbl --add-option plymouth.enable=0 --config
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# prevent fatal "watchdog: BUG: soft lockup" issue, which made it
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# necessary to reboot the machine ...
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pbl --add-option preempt=full --config
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# With newer kernels the hand-off of the frame-buffer from simple-drm
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# to the NVIDIA display driver does not work and hence this needs to be
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# disabled. It's tracked on NVIDIA side, but there is no ETA for fixing
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# available. For now it is fine to set this configuration. Unfortunately,
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# this needs to be done each time one upgrades the firmware. There is no
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# way to configure this at flash time, but one can configure this via sysfs.
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#
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# The values that we can write to this variable are ...
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#
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# #define NVIDIA_SOC_DISPLAY_HANDOFF_MODE_NEVER 0
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# #define NVIDIA_SOC_DISPLAY_HANDOFF_MODE_ALWAYS 1
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# #define NVIDIA_SOC_DISPLAY_HANDOFF_MODE_AUTO 2
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#
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# These are defined here:
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# https://github.com/NVIDIA/edk2-nvidia/blob/main/Silicon/NVIDIA/Include/NVIDIAConfiguration.h#L50
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# So we want to switch from '2' (auto) to '0' (never).
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file=/sys/firmware/efi/efivars/SocDisplayHandoffMode-781e084c-a330-417c-b678-38e696380cb9
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if test -f $file; then
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hexdump $file | head -n 1 | grep -q "0000000 0007 0000 0000"
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if test $? -ne 0; then
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chattr -i $file
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printf '\x07\x00\x00\x00\x00' | tee $file
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fi
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fi
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