robclark changed the topic of #aarch64-laptops to: Linux support for AArch64 Laptops (Chrome OS Trogdor Devices - Asus NovaGo TP370QL - HP Envy x2 - Lenovo Mixx 630 - Lenovo Yoga C630 - Lenovo ThinkPad X13s - and various other snapdragon laptops) - https://oftc.irclog.whitequark.org/aarch64-laptops
<steev>
i do have those in my initrd, it would be nice if we don't have to include them in the initramfs though
<jglathe_x13s>
this is from systemd, from the first line
<jglathe_x13s>
yes I did, loaded the dtb with the IOMMU hack
<jglathe_x13s>
had nothing else to load, so it was still there when I booted 6.7.1
<travmurav[m]>
I mean, for the boot for ^^ dmesg logs, I suppose you didn't run dtbhack?
<jglathe_x13s>
no
<travmurav[m]>
right, I suggest you to do to kill the zap shader and likely get gpu working (or patch zap shader out from your dtb at a cost of making booting in el1 always fail)
<travmurav[m]>
jglathe_x13s: could you describe a bit what happens when you boot with the third iommu enabled?
<jglathe_x13s>
I got a vid, will upload. it boots, and shows log until it comes to IOMMU. Then it stops, says signal received twice, garbled screen (loss of sync), dark screen.
<jglathe_x13s>
will do with dtbhack and 6.7.1. anyway, do I need to execute dtbhack at every boot? I guess so?
<travmurav[m]>
jglathe_x13s: yes if you want it to load and modify the dtb for boot, and you need to make sure your bootloader (i.e. grub) doesn't override it again
<travmurav[m]>
dtbhack loads the dtb into ram, makes updates to it and puts it into uefi config table (like what linux mode in x13s does)
<jglathe_x13s>
ok. So, it shouldn't have the devicetree= statement in the grub menu entry then?
<_[m]123>
ah yeah that one is not in 6.7.3 somehow
<steev>
correct
<steev>
well, that one would be whatever debian's kernel is on the day its built
<steev>
as a general rule of thumb, i like to use the dtb from each kernel, with them, just to be sure. if you have grub, you can add `devicetree /usr/lib/linux-image-X.X.X/qcom/sc8280xp-lenovo-thinkpad-x13s.dtb` in the boot entry (this of course, assumes that the rootfs isn't encrypted)
<steev>
in an ideal world, yes, the dtbs wouldn't change in a breaking way.
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