On Wed, Jul 26, 2023 at 02:53:42PM +0000, Klemens Nanni wrote: > startxfce4 in ~/.xsession leaves the screen black immediately after > login from xenodm on an Intel T14g3 with latest snap and packages, > sometimes it hangs completely and needs a hard reset, but this time > I could switch to ttyC0 and use DDB: > > > uvm_fault(0xffffffff825b0130, 0xffff8000020a8014, 0, 1) -> e > uvm_fault(0xffffffff825b0130, 0xffffffffffffffff, 0, 2) -> e > kernel: page fault trap, code=2 > Stopped at taskq_next_work+0x80: movq %rcx,0(%rdx) > TID PID UID PRFLAGS PFLAGS CPU COMMAND > 35 0x12 0 1 Xorg > 0 0x14000 0x200 4 drmtskl > 0 0x14000 0x200 0K drmwq > 0 0x14000 0x200 3 drmwq > 0 0x14000 0x200 2 drmwq > 0 0x14000 0x200 5 drmwq > taskq_next_work(ffff800000044cf00, ffff800023153ef0) at taskq_next_work+0x80 > task_thread(ffff800000044cf00) at task_thread+0xeb > end trace frame: 0x0, count: 13 > > > The graphics stack on this machine has always been unstable. > Back at m2k23 I could not even use Qt programs like telegram-desktop > without artifacts/glitches/hangs/crashes, but something improved and it > is almost stable, i.e. firefox + telegram-desktop + gui apps maybe hang > the machine once a week on GENERIC.MP when I'm unlucky. > 'disable inteldrm' is stable (but yields other bugs in Qt apps). > > > Xfce4, however, I have never been able to start in the first place. > > Anything I should look for in DDB next time? > Happy to poke at this in case anyone has a clue what's going on.
I tried xfce on 21AH t14 gen 3. The first time, everything seemed fine. The second time: panic: pmap_get_ptp: unmanaged user PTP another time with WITNESS chillbufs+0xc6: movq %r8,0x8(%rdx) r8 0xffffffff8251a868 cleancache+0x18 cachepages rdx 0xc8abc8abd8fde6c7 Line 1765 of "/sys/kern/vfs_bio.c" TAILQ_REMOVE(queue, bp, b_freelist); chillbufs+0xc6 bufcache_release+0x10a brelse+0x96 ffs_read+0x203 VOP_READ+0x45 uvn_io+0x26b uvn_get+0x15d uvm_fault_lower+0x336 uvm_fault+0x1b3 upageflttrap+0x65 usertrap+0x1ee recall_trap+0x8 *xfsettingsd removing ~/.config/xfce4/ before starting X, xfce starts again There appears to be some kind of memory corruption. often it is just uvm_fault(0xffffffff82519940, 0xffff8000019e0014, 0, 1) -> e and a hang