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Genode at virtual FOSDEM 2021
by Norman Feske 08 Mar '21

08 Mar '21

Hello everyone, the annual FOSDEM in Brussels and the microkernel developer room in particular is almost a mandatory date for us. Instead of gathering in Brussels, this year, crowds of Free-Software and Open-Source enthusiasts will hold a virtual event. The FOSDEM organizers are restless with setting up virtual counterparts of important FOSDEM features like developer rooms and even hallway meetings. FOSDEM is free for everyone. FOSDEM 2021, February 6 and 7 https://fosdem.org/2021/ The microkernel developer room is shepherded by Martin Decky of the HelenOS project, who announced a call for participation in November. You may have noticed his posting on this mailing list. It goes without saying that we at Genode Labs urged to contribute. In the meantime, the schedule of the developer room has been decided. https://fosdem.org/2021/schedule/track/microkernel/ The topic of our contribution is the presentation and demo of our recent developments of pluggable device drivers, which will be the basis for on-the-fly driver updates, self-healing, and power management. Saturday, February 2, 13:05 "Pluggable device drivers for Genode" Norman Feske https://fosdem.org/2021/schedule/event/microkernel_pluggable_device_drivers… The developer room will close with a panel discussion among several participating projects including Genode and moderated by Martin Decky. Saturday, February 2, 15:05 "State of Microkernels in 2021" https://fosdem.org/2021/schedule/event/microkernel_state_in_2021/ See you at virtual FOSDEM 2021! Norman -- Dr.-Ing. Norman Feske Genode Labs https://www.genode-labs.com · https://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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cpu specific kernel call
by Michael Grunditz 05 Mar '21

05 Mar '21

Hi, I have a kernel call that starts RISC OS, and uses psci. I wonder , where should I put that very aarch64 dependent code. I somehow need to be able to call it from userspace. Regarding kernel calls in general , what is the best way of calling them? Right now I do "MOV x0,#number ; SVC" , probably not very Genode style! :) -- Michael Grunditz Sent from my RISC OS workstation..

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Terminal stdin issue
by Michael Grunditz 02 Mar '21

02 Mar '21

Hi I am trying to use terminal for stdout and stdin. Output is no problem, but I can't get input to work.. I have this: if(select(1, &rfds, NULL, NULL,&tvp)) { log ("stdin data"); int a = fgetc(istream); log ("",Char(a)); That select always returns , and fgetc never returns, no matter how hard I hit my keyboard! /Michael

1 1

bootm on imx8
by Michael Grunditz 27 Feb '21

27 Feb '21

Hi, I am trying to boot a genode uImage (tftp,bootm) but gets ATAG not compiled in. Do I need to patch out that error from u-boot , or is there another workaround? Br Michael Grunditz

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Sporadic Invalid_clear exception in init
by Pirmin Duss 26 Feb '21

26 Feb '21

Hello Genodians We have a complex scenario in which we deploy 6 configs periodically. The configurations are applied in a loop always in the same order. Eventually init throws 'Genode::Bit_array_base::Invalid_clear' and terminates (see the backtrace below). Maybe it is noteworthy that packages with sub inits that have components that use resource saturation are started. Does anybody have an idea on how to proceed with debugging the problem? Best regards, Pirmin ``` #0 0x0000000050086294 in Genode::Bit_array_base::_set (this=0x50137868 <(anonymous namespace)::local_capability_space()::capability_space+229384>, index=<error reading variable: That operation is not available on integers of more than 8 bytes.>, width=1, free=true) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/util/bit_array.h:87 #1 Genode::Bit_array_base::_set (free=true, width=1, index=<error reading variable: That operation is not available on integers of more than 8 bytes.>, this=0x50137868 <(anonymous namespace)::local_capability_space()::capability_space+229384>) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/util/bit_array.h:75 #2 Genode::Bit_array_base::clear (width=1, index=<error reading variable: That operation is not available on integers of more than 8 bytes.>, this=0x50137868 <(anonymous namespace)::local_capability_space()::capability_space+229384>) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/util/bit_array.h:149 #3 Genode::Bit_allocator<4096u>::free (num_log2=0, bit_start=<error reading variable: That operation is not available on integers of more than 8 bytes.>, this=0x50137860 <(anonymous namespace)::local_capability_space()::capability_space+229376>) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/util/bit_allocator.h:118 #4 Genode::Capability_space_tpl<4096u, Genode::Native_capability::Data>::dec_ref (data=..., this=0x500ff860 <(anonymous namespace)::local_capability_space()::capability_space>) at /data/genode/depot/trimpim/src/base-linux/2021-02-23T1255/src/include/base/internal/capability_space_tpl.h:196 #5 Genode::Capability_space::dec_ref (data=...) at /data/genode/depot/trimpim/src/base-linux/2021-02-23T1255/src/lib/base/capability_space.cc:63 #6 0x000000005002756f in Genode::Native_capability::~Native_capability (this=0x401ff518, __in_chrg=<optimized out>) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/native_capability.h:76 #7 Genode::Capability<Genode::Pd_session>::~Capability (this=0x401ff518, __in_chrg=<optimized out>) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/capability.h:53 #8 Genode::Quota_transfer<Genode::Pd_session, Genode::Ram_quota>::Remote_account::~Remote_account (this=0x401ff510, __in_chrg=<optimized out>) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/quota_transfer.h:86 #9 Genode::Child::_revert_quota_and_destroy (this=<optimized out>, session=...) at /data/genode/depot/trimpim/src/base-linux/2021-02-23T1255/src/lib/base/child.cc:392 #10 0x000000005002800a in Genode::Child::session_closed (this=0x7ffff7f9eed0, session=...) at /data/genode/depot/trimpim/src/base-linux/2021-02-23T1255/src/lib/base/child.cc:508 #11 0x0000000050029e99 in Genode::Child::<lambda(Genode::Session_state&)>::operator()(Genode::Session_state &) (session=..., __closure=<optimized out>, __closure=<optimized out>) at /data/genode/depot/trimpim/src/base-linux/2021-02-23T1255/src/lib/base/child.cc:532 #12 0x000000005002a3d7 in Genode::Id_space<Genode::Parent::Server>::apply<Genode::Session_state, Genode::Child::session_response(Genode::Parent::Server::Id, Genode::Parent::Session_response)::<lambda(Genode::Session_state&)> > (fn=..., id=..., this=0x7ffff7f96088) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/mutex.h:64 #13 Genode::Child::session_response (this=<optimized out>, id=..., response=<optimized out>) at /data/genode/depot/trimpim/src/base-linux/2021-02-23T1255/src/lib/base/child.cc:518 #14 0x000000005003e41d in Genode::Meta::call_member<Genode::Meta::Empty, Genode::Parent, Genode::Meta::Pod_tuple<Genode::Id_space<Genode::Parent::Server>::Id, Genode::Meta::Pod_tuple<Genode::Parent::Session_response, Genode::Meta::Empty> > > (func=<optimized out>, args=<synthetic pointer>..., server=...) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/util/meta.h:490 #15 Genode::Parent::Rpc_session_response::serve<Genode::Parent, Genode::Meta::Empty> (args=<synthetic pointer>..., server=...) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/parent/parent.h:325 #16 Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::_do_serve<Genode::Parent::Rpc_session_response> (args=<synthetic pointer>..., this=0x7ffff7f96318) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:146 #17 Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::_do_dispatch<Genode::Meta::Type_list<Genode::Parent::Rpc_session_response, Genode::Parent::Rpc_main_thread, Genode::Parent::Rpc_deliver_session_cap, Genode::Parent::Rpc_resource_avail_sigh, Genode::Parent::Rpc_resource_request, Genode::Parent::Rpc_yield_sigh, Genode::Parent::Rpc_yield_request, Genode::Parent::Rpc_yield_response, Genode::Parent::Rpc_heartbeat_sigh, Genode::Parent::Rpc_heartbeat_response> > (out=..., in=..., opcode=..., this=0x7ffff7f96318) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:180 #18 Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::_do_dispatch<Genode::Meta::Type_list<Genode::Parent::Rpc_close, Genode::Parent::Rpc_session_response, Genode::Parent::Rpc_main_thread, Genode::Parent::Rpc_deliver_session_cap, Genode::Parent::Rpc_resource_avail_sigh, Genode::Parent::Rpc_resource_request, Genode::Parent::Rpc_yield_sigh, Genode::Parent::Rpc_yield_request, Genode::Parent::Rpc_yield_response, Genode::Parent::Rpc_heartbeat_sigh, Genode::Parent::Rpc_heartbeat_response> > (out=..., in=..., opcode=..., this=0x7ffff7f96318) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:201 #19 Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::_do_dispatch<Genode::Meta::Type_list<Genode::Parent::Rpc_upgrade, Genode::Parent::Rpc_close, Genode::Parent::Rpc_session_response, Genode::Parent::Rpc_main_thread, Genode::Parent::Rpc_deliver_session_cap, Genode::Parent::Rpc_resource_avail_sigh, Genode::Parent::Rpc_resource_request, Genode::Parent::Rpc_yield_sigh, Genode::Parent::Rpc_yield_request, Genode::Parent::Rpc_yield_response, Genode::Parent::Rpc_heartbeat_sigh, Genode::Parent::Rpc_heartbeat_response> > (out=..., in=..., opcode=..., this=0x7ffff7f96318) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:201 #20 Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::_do_dispatch<Genode::Meta::Type_list<Genode::Parent::Rpc_session_cap, Genode::Parent::Rpc_upgrade, Genode::Parent::Rpc_close, Genode::Parent::Rpc_session_response, Genode::Parent::Rpc_main_thread, Genode::Parent::Rpc_deliver_session_cap, Genode::Parent::Rpc_resource_avail_sigh, Genode::Parent::Rpc_resource_request, Genode::Parent::Rpc_yield_sigh, Genode::Parent::Rpc_yield_request, Genode::Parent::Rpc_yield_response, Genode::Parent::Rpc_heartbeat_sigh, Genode::Parent::Rpc_heartbeat_response> > (out=..., in=..., opcode=..., this=0x7ffff7f96318) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:201 #21 Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::_do_dispatch<Genode::Meta::Type_list<Genode::Parent::Rpc_session, Genode::Parent::Rpc_session_cap, Genode::Parent::Rpc_upgrade, Genode::Parent::Rpc_close, Genode::Parent::Rpc_session_response, Genode::Parent::Rpc_main_thread, Genode::Parent::Rpc_deliver_session_cap, Genode::Parent::Rpc_resource_avail_sigh, Genode::Parent::Rpc_resource_request, Genode::Parent::Rpc_yield_sigh, Genode::Parent::Rpc_yield_request, Genode::Parent::Rpc_yield_response, Genode::Parent::Rpc_heartbeat_sigh, Genode::Parent::Rpc_heartbeat_response> > (this=this@entry=0x7ffff7f96318, opcode=..., opcode@entry=..., in=..., out=...) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:201 #22 0x000000005003ef50 in Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::_do_dispatch<Genode::Meta::Type_list<Genode::Parent::Rpc_session_sigh, Genode::Parent::Rpc_session, Genode::Parent::Rpc_session_cap, Genode::Parent::Rpc_upgrade, Genode::Parent::Rpc_close, Genode::Parent::Rpc_session_response, Genode::Parent::Rpc_main_thread, Genode::Parent::Rpc_deliver_session_cap, Genode::Parent::Rpc_resource_avail_sigh, Genode::Parent::Rpc_resource_request, Genode::Parent::Rpc_yield_sigh, Genode::Parent::Rpc_yield_request, Genode::Parent::Rpc_yield_response, Genode::Parent::Rpc_heartbeat_sigh, Genode::Parent::Rpc_heartbeat_response> > (out=..., in=..., opcode=..., this=0x7ffff7f96318) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/util/meta.h:626 #23 Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::_do_dispatch<Genode::Meta::Type_list<Genode::Parent::Rpc_announce, Genode::Parent::Rpc_session_sigh, Genode::Parent::Rpc_session, Genode::Parent::Rpc_session_cap, Genode::Parent::Rpc_upgrade, Genode::Parent::Rpc_close, Genode::Parent::Rpc_session_response, Genode::Parent::Rpc_main_thread, Genode::Parent::Rpc_deliver_session_cap, Genode::Parent::Rpc_resource_avail_sigh, Genode::Parent::Rpc_resource_request, Genode::Parent::Rpc_yield_sigh, Genode::Parent::Rpc_yield_request, Genode::Parent::Rpc_yield_response, Genode::Parent::Rpc_heartbeat_sigh, Genode::Parent::Rpc_heartbeat_response> > (out=..., in=..., opcode=..., this=0x7ffff7f96318) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:201 #24 Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::_do_dispatch<Genode::Meta::Type_list<Genode::Parent::Rpc_exit, Genode::Parent::Rpc_announce, Genode::Parent::Rpc_session_sigh, Genode::Parent::Rpc_session, Genode::Parent::Rpc_session_cap, Genode::Parent::Rpc_upgrade, Genode::Parent::Rpc_close, Genode::Parent::Rpc_session_response, Genode::Parent::Rpc_main_thread, Genode::Parent::Rpc_deliver_session_cap, Genode::Parent::Rpc_resource_avail_sigh, Genode::Parent::Rpc_resource_request, Genode::Parent::Rpc_yield_sigh, Genode::Parent::Rpc_yield_request, Genode::Parent::Rpc_yield_response, Genode::Parent::Rpc_heartbeat_sigh, Genode::Parent::Rpc_heartbeat_response> > (out=..., in=..., opcode=..., this=0x7ffff7f96318) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:201 #25 Genode::Rpc_dispatcher<Genode::Parent, Genode::Parent>::dispatch (out=..., in=..., opcode=..., this=0x7ffff7f96318) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:235 #26 Genode::Rpc_object<Genode::Parent, Genode::Parent>::dispatch (this=0x7ffff7f96290, opcode=..., in=..., out=...) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/rpc_server.h:272 #27 0x000000005006b38a in Genode::Rpc_entrypoint::<lambda(Genode::Rpc_object_base*)>::operator() (obj=0x7ffff7f96290, __closure=<synthetic pointer>) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/mutex.h:64 #28 Genode::Object_pool<Genode::Rpc_object_base>::apply<Genode::Rpc_entrypoint::entry()::<lambda(Genode::Rpc_object_base*)> > (func=..., capid=<optimized out>, this=0x500fca50 <Genode::bootstrap_component()::startup+528>) at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/object_pool.h:147 #29 Genode::Rpc_entrypoint::entry (this=0x500fc9a8 <Genode::bootstrap_component()::startup+360>) at /data/genode/depot/trimpim/src/base-linux/2021-02-23T1255/src/lib/base/rpc_dispatch_loop.cc:68 #30 0x000000005009ec3d in Genode::Thread::_thread_start () at /data/genode/depot/trimpim/api/base/2021-02-23T1255/include/base/output.h:54 #31 0x00000000500b3e3b in thread_start () at /data/genode/depot/trimpim/src/base-linux/2021-02-23T1255/src/lib/syscall/spec/x86_64/lx_clone.S:62 ```

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RPC Interface for I2C Driver
by Jean-Adrien Domage 25 Feb '21

25 Feb '21

Dear Genodians, We would like to introduce an i2c driver for imx8q_evk to Genode. Thanks to the hints from Sebastian, I now have a prototype component that can send/receive data via the i2c bus of the imx8q_evk. The next task is to design the RPC interface for the driver. What would be a good kind of interface? Do you have driver(s)/component(s) to recommend as example? Or any specific guidelines? Cheers, Jean-Adrien Domage Software Engineer gapfruit AG

3 2

Running Genode on a server system
by Joerg-C. Boehme 25 Feb '21

25 Feb '21

Hi everyone, I like to "use" Genode to get more familiar with it. My idea was to run a Genode server with lighttpd like genodians.org I have a small "Cloud Server" or "vServer" from Hetzner. It looks like they use qemu but unfortunately they use the "440FX" as emulation. It is not possible to use a nic_drv on it [1]. My question is, does somebody know who provide servers where I can install/run a Genode ? I assume the genodians.org is installed on its own hardware and "use a colocation" contract. Btw. I think this is the correct site [2] to see on which hardware genode is running, or? Thanks, Jörg [1] See my email on 24. Feb. 2021 15:01:26 CET: "acpi_drv / platform_drv support" [2] https://usr.sysret.de/jws/genode/hcl.html

1 0

acpi_drv / platform_drv support
by Joerg-C. Boehme 25 Feb '21

25 Feb '21

Hi everyone, I have some question about the: acpi_drv and platform_drv. In short: Is acpi_drv and platform_drv are only supporting hardware boards with PCIe ? In detail: I do following: make KERNEL=nova run/lighttpd And start the var/run/lighttpd.iso with qemu-system-x86_64 (without -machine q35 parameter!) qemu-system-x86_64 -no-kvm -display sdl -cpu core2duo -nographic -netdev user,id=net0,hostfwd=tcp::5555-:80,hostfwd=tcp::5556-:443 -net nic,model=e1000,netdev=net0 -serial mon:stdio -m 512 -cdrom var/run/lighttpd.iso It fails with: .... [init -> nic_drv -> acpi_drv] SMBIOS table (entry point: 0x1758f0 structures: 0xf5910) [init -> nic_drv -> platform_drv] Error: ACPI report parsing error. [init -> nic_drv -> platform_drv] Error: Uncaught exception of type 'int' [init -> nic_drv -> platform_drv] Warning: abort called - thread: ep I extendend the "error output" (maybe you would like to have this? I can create a PR?) And I got following: ... [init -> nic_drv -> acpi_drv] Freeing up memory of elements - 3104 bytes [init -> nic_drv -> acpi_drv] SMBIOS table (entry point: 0x1758f0 structures: 0xf5910) [init -> nic_drv -> platform_drv] Error: ACPI report parsing error. Exception type int: 2 [init -> nic_drv -> platform_drv] Error: ACPI ROM: <acpi> [init -> nic_drv -> platform_drv] <root_bridge bdf="0x0"/> [init -> nic_drv -> platform_drv] <irq_override irq="11" gsi="11" flags="0xd"/> [init -> nic_drv -> platform_drv] <irq_override irq="10" gsi="10" flags="0xd"/> [init -> nic_drv -> platform_drv] <irq_override irq="9" gsi="9" flags="0xd"/> [init -> nic_drv -> platform_drv] <irq_override irq="5" gsi="5" flags="0xd"/> [init -> nic_drv -> platform_drv] <irq_override irq="0" gsi="2" flags="0x0"/> [init -> nic_drv -> platform_drv] </acpi> [init -> nic_drv -> platform_drv] [init -> nic_drv -> platform_drv] Error: Uncaught exception of type 'int' [init -> nic_drv -> platform_drv] Warning: abort called - thread: ep I figured out that following is missing: [init -> nic_drv -> platform_drv] <bdf start="0" count="65536" base="0xb0000000"/> The acpi_drv get this from [init -> nic_drv -> acpi_drv] MCFG BASE 0xb0000000 seg 0x0 bus 0x0-0xff MCFG -> PCI Express memory mapped configuration space base address Description Table I also figured out that the qemu parameter -machine q35 is using as chipset a ICH9 and this has PCIe * Can I somehow "manuel" configure the system on 440FX based hardware ? * Is there a reason why platform_drv is not supporting older hardware ? Thanks Jörg

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Announcement: Genode OS Framework version 21.02 released
by Norman Feske 25 Feb '21

25 Feb '21

I am very happy to announce the release of Genode 21.02, which features the results of three long-term developments. First, it introduces the ability to start, re-start, remove, and update network device drivers at runtime, following the approach we already took for framebuffer and input drivers last year. With this architectural change, the liveliness of network-application stacks no longer depends on the robustness of the used network drivers. Second, the release brings a long anticipated update of VirtualBox. The addition of VirtualBox 6 is not merely an evolutionary update of our aging VirtualBox 5 version. Instead, we repeated the legwork of porting this complex software stack from the ground up, drawing from the many lessons learned since our initial port of VirtualBox 4 in 2014, and refining Genode's virtualization interfaces along the way. The initial version of VirtualBox 6 should nevertheless be regarded as a snapshot of our ongoing development, not as a drop-in replacement of VirtualBox 5, yet. Third, Genode has now became able to use mobile-data connectivity over LTE. The work on the modem stack ranged from device drivers, over the porting of protocol-stack implementations, up to the network-configuration level. It goes without saying that this is an important building block for our ambition to run Genode on the Pinephone by the end of the year. Besides these prominent topics, the new version comes with many further improvements as summarized below. - Pluggable network device drivers - LTE modem stack - VirtualBox 6.1.14 - Improved USB pass-through for VirtualBox 5 - VirtIO block devices for virtual machines on ARM - Power-gating of PCI devices on x86 - Pine-A64-LTS single board computer - RISC-V update to privileged ISA 1.10 - VFS support for named pipes - OpenSSL 1.1.1i, curl 7.70.0 The full story is presented by our detailed release documentation at: https://genode.org/documentation/release-notes/21.02 Cheers Norman -- Dr.-Ing. Norman Feske Genode Labs https://www.genode-labs.com · https://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

1 0

problem with permanent modification on Sculpt
by Edoardo Mantovani 23 Feb '21

23 Feb '21

Hello Everyone, Some hours ago I've installed Sculpt OS on my HDD through DD tool using ubuntu flashed from bootable USB. Now, the system flashes without any errors and everything seems cool, but there is only one problem: I am not able to apport any permanent modification to the OS, everything seems to live in RAM, I have also followed the section "Making customizations permanent" here[1], but also without clicking into the ram fs filesystem bottoms the /config/ folder resets itself after the reboot. Any Hints? Obviously, I would like to have a desktop OS that isn't volatile. (Sorry for the possibly dumb question but I've never had such types of problems) NOTE: Sculpt perfectly supports the hardware of my computer. [1] https://genode.org/documentation/articles/sculpt-20-02 Regards. Edoardo Mantovani, 2021 --- Edoardo Mantovani Independent security researcher email: Baseband(a)cpan.org Urbino, Italy

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