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From: Pellaeon L. <nfs...@gm...> - 2024-09-01 05:32:29
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Hi, @Mark: has the team replied anything? @Marco: `proptest` on my system did not return any property related to privacy screen, is this normal? (I ran `proptest | grep -i privacy`, which returned empty result.) Thanks, Marco Trevisan (Treviño) <ma...@3v...> 於 2024年6月4日 週二 上午2:07寫道： > Hi, > > Not sure if something changed or it is different in newer models, but > the privacy screen feature so far has been exposed as a KMS property you > can inspect and set with tools like proptest (in libdrm-tests package > for what concerns ubuntu) > > Cheers > > On giu 3 2024, at 1:46 pm, Pellaeon Lin <nfs...@gm...> wrote: > > > Hi, > > > > I have a ThinkPad X13 Gen 2 AMD with PrivacyGuard. But by pressing the > > combination key Fn+D it does not toggle the PrivacyGuard, the > > PrivacyGuard stays on. I've tested: > > > > - Fn+D does toggle PrivacyGuard when I'm in the BIOS > > - Fn+D has no effect on Ubuntu 22.10, Ubuntu 23.04, Ubuntu 23.10, > > Ubuntu 24.04 and Fedora 40 (except Ubuntu 23.10 and 24.04, all was > > tested using LiveUSB) > > > > In all of the Linux cases, I can confirm that by pressing Fn+D, the > > status value of /proc/acpi/ibm/lcdshadow actually changes. > > > > I've always thought this was a Ubuntu-specific issue, until I tested > Fedora. > > > > I tested this further by installing the acpi-call-dkms package on > > Ubuntu and issues the following call: > > > > echo '\_SB.PCI0.LPC0.EC0.HKEY.SSSS 0x1' | sudo tee /proc/acpi/call > > > > It returned 0 (which should mean success), but PrivacyGuard is still > > ON. Then I tried to call it with 0x0: > > > > echo '\_SB.PCI0.LPC0.EC0.HKEY.SSSS 0x0' | sudo tee /proc/acpi/call > > > > Also getting 0 in return. PrivacyGuard is still ON. > > > > Based on my limited understanding of ACPI and the kernel, at this > > point it might be a firmware issue? (fwupdmgr shows that there is no > > available updates) But based on my reading and understanding of > > thinkpad_acpi.c, the particular ACPI call that I issued is also how > > the Linux driver currently operates the PrivacyGuard feature, which > > means the driver might also be affected by this issue. So I'm hoping > > someone could help me debug this further, or point out anything that > > I'm not understanding correctly. > > > > Thanks! > > _______________________________________________ > > > > ibm-acpi-devel mailing list > > > > ibm...@li... > > > > https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel > |
