Public bug reported:
When trying to start xrdp I ran into continuous application start failures.
Digging into ~/.xsession-errors, the issue was the fact that the script
contains bashisms, but is being run by /bin/sh (dash).
Modifying the shebang from /bin/sh to /bin/bash and modifying the calling
script to rely on the value in the shebang allowed xrdp to start an Xsession
cleanly.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: x11-common 1:7.7+23ubuntu2
Uname: Linux 5.15.148-tegra aarch64
.proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
.proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
NVRM version: NVIDIA UNIX Open Kernel Module for aarch64 540.4.0 Release
Build (buildbrain@mobile-u64-6354-d6000) Thu Sep 18 15:33:49 PDT 2025
GCC version: collect2: error: ld returned 1 exit status
ApportVersion: 2.20.11-0ubuntu82.10
Architecture: arm64
CasperMD5CheckResult: unknown
Date: Mon Jul 13 17:13:03 2026
Dependencies: lsb-base 11.1.0ubuntu4
DistUpgraded: Fresh install
DistroCodename: jammy
DistroVariant: ubuntu
DkmsStatus:
backport-iwlwifi/11510, 5.15.0-168-generic, aarch64: installed
backport-iwlwifi/11510, 5.15.0-179-generic, aarch64: installed
backport-iwlwifi/11510, 5.15.0-185-generic, aarch64: installed
backport-iwlwifi/11510, 5.15.148-tegra, aarch64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
Lspci-vt:
-+-[0008:00]---00.0-[01-ff]----00.0 Realtek Semiconductor Co., Ltd.
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
+-[0007:00]---00.0-[01-ff]----00.0 Sandisk Corp Device 5042
+-[0001:00]---00.0-[01-ff]----00.0 Intel Corporation Wireless 8265 / 8275
\-[0000:00]-
Lsusb:
Bus 002 Device 002: ID 0bda:0489 Realtek Semiconductor Corp. 4-Port USB 3.0 Hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2b Intel Corp. Bluetooth wireless interface
Bus 001 Device 002: ID 0bda:5489 Realtek Semiconductor Corp. 4-Port USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: NVIDIA NVIDIA Jetson Orin Nano Engineering Reference Developer Kit
Super
PackageArchitecture: all
ProcKernelCmdLine: root=PARTUUID=4e9413a6-fa67-4a16-a108-da2c2426d07a rw
rootwait rootfstype=ext4 mminit_loglevel=4 console=ttyTCU0,115200
firmware_class.path=/etc/firmware fbcon=map:0 video=efifb:off console=tty0
bl_prof_dataptr=2031616@0x271E10000 bl_prof_ro_ptr=65536@0x271E00000
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
acpidump:
dmi.bios.date: 09/18/2025
dmi.bios.release: 0.0
dmi.bios.vendor: EDK II
dmi.bios.version: 36.4.7-gcid-42132812
dmi.board.asset.tag: 699-13767-0005-300 T.1
dmi.board.name: Jetson
dmi.board.vendor: NVIDIA
dmi.board.version: Not Specified
dmi.chassis.asset.tag: 699-13767-0005-300 T.1
dmi.chassis.type: 1
dmi.chassis.vendor: NVIDIA
dmi.chassis.version: Unknown
dmi.ec.firmware.release: 0.0
dmi.modalias:
dmi:bvnEDKII:bvr36.4.7-gcid-42132812:bd09/18/2025:br0.0:efr0.0:svnNVIDIA:pnNVIDIAJetsonOrinNanoEngineeringReferenceDeveloperKitSuper:pvrNotSpecified:rvnNVIDIA:rnJetson:rvrNotSpecified:cvnNVIDIA:ct1:cvrUnknown:skuUnknown:
dmi.product.family: Unknown
dmi.product.name: NVIDIA Jetson Orin Nano Engineering Reference Developer Kit
Super
dmi.product.sku: Unknown
dmi.product.version: Not Specified
dmi.sys.vendor: NVIDIA
mtime.conffile..etc.X11.Xsession: 2026-07-13T17:01:28.794732
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.113-2~ubuntu0.22.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.2.1-1ubuntu3.1~22.04.4
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.4-2ubuntu1.7~22.04.16
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug arm64 jammy ubuntu
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https://bugs.launchpad.net/bugs/2160575
Title:
/etc/X11/Xsession does not start with /bin/sh: contains bashisms
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