.xsession-errors tail: [FIXME] UNCLASSIFIED DEVICE name: wakeup1 type: (null) subsystem: wakeup driver: (null) [Node Path: (null)] [Syspath: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:0f/wakeup/wakeup1] [(null):(null)] [FIXME] UNCLASSIFIED DEVICE name: wakeup2 type: (null) subsystem: wakeup driver: (null) [Node Path: (null)] [Syspath: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:10/wakeup/wakeup2] [(null):(null)] [FIXME] UNCLASSIFIED DEVICE name: wakeup11 type: (null) subsystem: wakeup driver: (null) [Node Path: (null)] [Syspath: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/wakeup/wakeup11] [(null):(null)] [FIXME] UNCLASSIFIED DEVICE name: wakeup13 type: (null) subsystem: wakeup driver: button [Node Path: (null)] [Syspath: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/wakeup/wakeup13] [(null):(null)] [FIXME] UNCLASSIFIED DEVICE name: wakeup17 type: (null) subsystem: wakeup driver: uhci_hcd [Node Path: (null)] [Syspath: /sys/devices/pci0000:00/0000:00:1a.0/wakeup/wakeup17] [8086:2834] [FIXME] UNCLASSIFIED DEVICE name: wakeup18 type: (null) subsystem: wakeup driver: uhci_hcd [Node Path: (null)] [Syspath: /sys/devices/pci0000:00/0000:00:1a.1/wakeup/wakeup18] [8086:2835] [FIXME] UNCLASSIFIED DEVICE name: wakeup22 type: (null) subsystem: wakeup driver: ehci-pci [Node Path: (null)] [Syspath: /sys/devices/pci0000:00/0000:00:1a.7/wakeup/wakeup22] [8086:283a] [FIXME] UNCLASSIFIED DEVICE name: hdaudioC0D0 type: (null) subsystem: hdaudio driver: snd_hda_codec_analog [Node Path: (null)] [Syspath: /sys/devices/pci0000:00/0000:00:1b.0/hdaudioC0D0] [8086:284b] [FIXME] UNCLASSIFIED DEVICE name: wakeup23 type: (null) subsystem: wakeup driver: tg3 [Node Path: (null)] [Syspath: /sys/devices/pci0000:00/0000:00:1c.4/0000:02:00.0/wakeup/wakeup23] [14e4:167a] [FIXME] UNCLASSIFIED DEVICE name: wakeup19 type: (null) subsystem: wakeup driver: uhci_hcd [Node Path: (null)] [Syspath: /sys/devices/pci0000:00/0000:00:1d.0/wakeup/wakeup19] [8086:2830] [FIXME] UNCLASSIFIED DEVICE name: wakeup20 type: (null) subsystem: wakeup driver: uhci_hcd [Node Path: (null)] [Syspath: /sys/devices/pci0000:00/0000:00:1d.1/wakeup/wakeup20] [8086:2831] [FIXME] UNCLASSIFIED DEVICE name: wakeup21 type: (null) subsystem: wakeup driver: uhci_hcd [Node Path: (null)] [Syspath: /sys/devices/pci0000:00/0000:00:1d.2/wakeup/wakeup21] [8086:2832] [FIXME] UNCLASSIFIED DEVICE name: wakeup24 type: (null) subsystem: wakeup driver: ehci-pci [Node Path: (null)] [Syspath: /sys/devices/pci0000:00/0000:00:1d.7/wakeup/wakeup24] [8086:2836] [FIXME] UNCLASSIFIED DEVICE name: cmos_nvram0 type: (null) subsystem: nvmem driver: (null) [Node Path: (null)] [Syspath: /sys/devices/pnp0/00:01/cmos_nvram0] [(null):(null)] [FIXME] UNCLASSIFIED DEVICE name: wakeup16 type: (null) subsystem: wakeup driver: alarmtimer [Node Path: (null)] [Syspath: /sys/devices/pnp0/00:01/rtc/rtc0/alarmtimer.0.auto/wakeup/wakeup16] [(null):(null)] [FIXME] UNCLASSIFIED DEVICE name: wakeup15 type: (null) subsystem: wakeup driver: rtc_cmos [Node Path: (null)] [Syspath: /sys/devices/pnp0/00:01/wakeup/wakeup15] [(null):(null)] [FIXME] UNCLASSIFIED DEVICE name: wakeup14 type: (null) subsystem: wakeup driver: i8042 kbd [Node Path: (null)] [Syspath: /sys/devices/pnp0/00:02/wakeup/wakeup14] [(null):(null)] [FIXME] UNCLASSIFIED DEVICE name: mc type: (null) subsystem: edac driver: (null) [Node Path: (null)] [Syspath: /sys/devices/system/edac/mc] [(null):(null)] Connection failure: Connection refused pa_context_connect() failed: Connection refused [2022/09/23 20:15:01.728] [konsole] [1006] WARNING: Unable to use /opt/trinity/share/apps/konsole/screen.desktop [2022/09/23 20:15:23.001] klipper: Fatal IO error: client killed [2022/09/23 20:15:23.001] ktip: Fatal IO error: client killed [2022/09/23 20:15:23.004] khelpcenter: Fatal IO error: client killed [2022/09/23 20:15:23.004] kicker: Fatal IO error: client killed [2022/09/23 20:15:23.006] konsole: Fatal IO error: client killed [2022/09/23 20:15:23.007] tderandrtray: Fatal IO error: client killed [2022/09/23 20:15:23.008] kdesktop: Fatal IO error: client killed [2022/09/23 20:15:23.017] twin: Fatal IO error: client killed [2022/09/23 20:15:23.019] [tdeio (TDEIOConnection)] [1051] ERROR: Header read failed, errno=104 (pid 1051 process "it] help /tmp/tdesocket-root/tdelauncherahjy22.sl") [2022/09/23 20:15:23.019] [tdeio (TDEIOConnection)] [1051] ERROR: Header has invalid size (-1) (pid 1051 process "it] help /tmp/tdesocket-root/tdelauncherahjy22.sl") [2022/09/23 20:15:23.019] knotify: Fatal IO error: client killed [2022/09/23 20:15:23.021] kmix: Fatal IO error: client killed [2022/09/23 20:15:23.024] [KSMServer] Fatal IO error: client killed [2022/09/23 20:15:23.025] [tdeinit] Fatal IO error: client killed [2022/09/23 20:15:23.025] [tdeinit] sending SIGHUP to children. [2022/09/23 20:15:23.028] kded: Fatal IO error: client killed [2022/09/23 20:15:23.033] [tdeinit] sending SIGTERM to children. [2022/09/23 20:15:23.033] [tdeinit] Exit. [tdelauncher] Exiting on signal 15 [2022/09/23 20:15:23.035] tdelauncher: Fatal IO error: client killed

Session starts, mostly finishes painting desktop, Kicker, Konsole & Release Notes window, then blinks once or thrice, then greeter returns. The following shows up in /var/log/Xorg.0.log.old tail: [ 522.736] (II) modeset(0): Modeline "1680x1050"x0.0 119.00 1680 1728 1760 1840 1050 1053 1059 1080 +hsync -vsync (64.7 kHz e) [ 522.739] (EE) [ 522.739] (EE) Backtrace: [ 522.739] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x139) [0x555beac49bf9] [ 522.740] (EE) 1: /lib/x86_64-linux-gnu/libc.so.6 (__sigaction+0x40) [0x7f45e123daf0] [ 522.741] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (pthread_key_delete+0x15c) [0x7f45e128983c] [ 522.742] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (raise+0x12) [0x7f45e123da52] [ 522.743] (EE) 4: /lib/x86_64-linux-gnu/libc.so.6 (abort+0xcf) [0x7f45e1228469] [ 522.744] (EE) unw_get_proc_name failed: no unwind info found [-10] [ 522.744] (EE) 5: /usr/lib/x86_64-linux-gnu/dri/crocus_dri.so (?+0x0) [0x7f45df29e089] [ 522.744] (EE) 6: /usr/lib/x86_64-linux-gnu/dri/crocus_dri.so (nouveau_drm_screen_create+0x6bd469) [0x7f45e01bbd19] [ 522.745] (EE) 7: /usr/lib/x86_64-linux-gnu/dri/crocus_dri.so (__driDriverGetExtensions_d3d12+0xc4f30) [0x7f45df36fd70] [ 522.746] (EE) 8: /usr/lib/xorg/modules/libglamoregl.so (glamor_destroy_pixmap+0x14c) [0x7f45e0dddc5c] [ 522.747] (EE) unw_get_proc_name failed: no unwind info found [-10] [ 522.747] (EE) 9: /usr/lib/xorg/modules/drivers/modesetting_drv.so (?+0x0) [0x7f45e0e170b3] [ 522.747] (EE) 10: /usr/lib/xorg/Xorg (BlockHandler+0xad) [0x555beaadb0dd] [ 522.747] (EE) 11: /usr/lib/xorg/Xorg (WaitForSomething+0x153) [0x555beac43573] [ 522.747] (EE) 12: /usr/lib/xorg/Xorg (SendErrorToClient+0x113) [0x555beaad6463] [ 522.747] (EE) 13: /usr/lib/xorg/Xorg (InitFonts+0x3bc) [0x555beaada6bc] [ 522.748] (EE) 14: /lib/x86_64-linux-gnu/libc.so.6 (__libc_init_first+0x8a) [0x7f45e122920a] [ 522.749] (EE) 15: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0x7c) [0x7f45e12292bc] [ 522.749] (EE) 16: /usr/lib/xorg/Xorg (_start+0x2a) [0x555beaac3b6a] [ 522.749] (EE) [ 522.749] (EE) Fatal server error: [ 522.749] (EE) Caught signal 6 (Aborted). Server aborting

Sometimes it takes a very short while before the errant behavior begins. The following I was able to capture in such a session: # xdriinfo Screen 0: crocus # pinxi -C --vs pinxi 3.3.21-17 (2022-09-21) CPU: Info: dual core model: Intel Core2 6700 bits: 64 type: MCP cache: L2: 4 MiB Speed (MHz): avg: 2658 min/max: N/A cores: 1: 2658 2: 2658 # pinxi -GSaz System: Kernel: 5.19.0-1-amd64 arch: x86_64 bits: 64 compiler: gcc v: 11.3.0 parameters: ro root=LABEL=13debian ipv6.disable=1 net.ifnames=0 plymouth.enable=0 noresume mitigations=auto consoleblank=0 vga=791 video=1440x900@60 5 Desktop: Trinity v: R14.0.13 tk: Qt v: 3.5.0 info: kicker wm: Twin v: 3.0 vt: 7 dm: 1: TDM 2: XDM Distro: Debian GNU/Linux bookworm/sid Graphics: Device-1: Intel 82Q963/Q965 Integrated Graphics vendor: Dell driver: i915 v: kernel arch: Gen-4 process: Intel 65n built: 2006-07 ports: active: DVI-D-1,VGA-1 empty: none bus-ID: 00:02.0 chip-ID: 8086:2992 class-ID: 0300 Display: x11 server: X.Org v: 1.21.1.4 driver: X: loaded: modesetting alternate: fbdev,vesa dri: crocus gpu: i915 display-ID: :0 screens: 1 Screen-1: 0 s-res: 3600x1200 s-dpi: 120 s-size: 762x254mm (30.00x10.00") s-diag: 803mm (31.62") Monitor-1: DVI-D-1 pos: primary,left model: NEC EA243WM serial: <filter> built: 2011 res: 1920x1200 hz: 60 dpi: 94 gamma: 1.2 size: 519x324mm (20.43x12.76") diag: 612mm (24.1") ratio: 16:10 modes: max: 1920x1200 min: 640x480 Monitor-2: VGA-1 pos: right model: Dell P2213 serial: <filter> built: 2012 res: 1680x1050 hz: 60 dpi: 90 gamma: 1.2 size: 473x296mm (18.62x11.65") diag: 558mm (22") ratio: 16:10 modes: max: 1680x1050 min: 720x400 OpenGL: renderer: Mesa Intel 965Q (BW) v: 2.1 Mesa 22.2.0-rc3 direct render: Yes

Same thing happens even with only the DVI display connected. It does not happen using an IceWM session. If I force use of the intel DDX display driver instead of the modesetting DIX, then the problem is not exhibited. Same PC runs Plasma on Tumbleweed and KDE3 on Leap 15.4 with no similar issues and modesetting DIX. This behavior was first experienced last June, but it wasn not booted since until upgrading Bookworm today via apt-get full-upgrade. It also doesn't matter whether i965 or crocus is used for dri.

Current boot journal: https://paste.debian.net/1254833/

How can we tell whether this drm GPU hang is a TDE issue, or a Bookworm issue, or both?