#aarch64-laptops on 2025-07-18 — irc logs at oftc.catirclogs.org

2024-07-16 04:52 ChanServ 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

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02:30 <kuruczgy_> https://lore.kernel.org/linux-arm-msm/20250717-dp_mst_bindings-v3-0-72ce08285703@oss.qualcomm.com/

02:30 <kuruczgy_> This is only adding various MST prerequisites to the x1e dts, we are still waiting for the big "[PATCH v2 00/38] drm/msm/dp: Add MST support for MSM chipsets" series to be fixed up, right?

02:30 <kuruczgy_> Also does "The following chipsets support 2 total pixel streams: [...] x1e80100" mean that x1e can only support max 2 displays on 1 USB-C port? Is this a hardware limitation?

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08:11 <jhovold> jdb[m]: yes, you can leave out efi=noruntime when the "linux boot" option is enabled on the x13s as the latter disables all runtime services

08:12 <jhovold> my x13s resets instead of powering off when runtime services are enabled

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08:12 <jhovold> and on the reference designs it's clear that the efi firmware crashes

08:13 <jhovold> on x1e, which the question yesterday was about, the firmware triggers a page fault

08:14 <jhovold> you really want to make sure you pass efi=noruntime even if things seems to work (e.g. by triggering a watchdog reset, or by hanging when the machine is supposed to be off)

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08:20 <jhovold> mani_s: does your t14s have a modem?

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08:43 <jdb[m]> Super clear, thanks jhovold

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09:00 <valpackett> huh.. when does the page fault happen exactly?

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09:37 <jhovold> valpackett: when executing the efi restart service

09:39 <jhovold> [Firmware Bug]: Unable to handle paging request in EFI runtime service

09:39 <jhovold> also see e8dfdf3162eb ("arm64: efi: Recover from synchronous exceptions occurring in firmware")

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10:22 <AlekseiNosachev[m]> <jhovold> "mani_s: does your t14s have a..." <- Looks like surface's 5G gpio matches lenovo's one

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17:34 <\[m]> do you need to still put extra grub config options for luks/cryptsetup to open encrypted volumes at boot?

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17:35 <\[m]> it used to be under kernel parms I think for the x13s - those disappearing might mean they're not needed anymore https://github.com/jhovold/linux/wiki/T14s#kernel-command-line e.g.

17:36 <\[m]> but I do just get a black screen after grub starts booting the distro

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18:15 <steev> afaik, those are still needed (i still run them)

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19:24 <\[m]> could you share them again?

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19:57 <jhovold> \[m]: you may be thinking of regulator_ignore_unused, but that's only needed when you determine which display modules need to be in your initramfs

19:57 <jhovold> and I've never mentioned that one in the wiki (but I do list the modules needed on x13s in the commit message for johan_defconfig)

20:04 <steev> oh, yeah, i don't use regulator, but the rest on the line (per johan's comment earlier discussing whether efi=noruntime should be used) - i meant the 3 listed in the t14s wiki https://github.com/jhovold/linux/wiki/X13s#kernel-command-line

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20:07 <steev> the question i am wondering is, where do the battery "notification id" -> "what the notification is" come from because trying to search for battery notification ids is... an exercise in futility. but locally i'm seeing unknown notifications for 0x83, 0x283 and 0x483

20:07 <steev> while using the power supply they provided

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23:35 <valpackett> is clk_ignore_unused still actually needed?

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