como no supe como buscar el historial para el comando dmesg de tal forma de ver el registro para la desconexión que tuve al mediodia, entonceshice una help del comando journal y encontré que con la opción -k mostraba lo de dmesg:
El comando journalctl -k -p warning -b -3 >> Documentos/generales/modifs_touch_wifi.txt dió esto:
recortado para mostrar solo la parte del corte, desconexión del wifi:
nov 13 10:30:58 netbook kernel: warning: `kdeconnectd’ uses wireless extensions which will stop working for Wi-Fi 7 hardware; use nl80211
nov 13 11:02:30 netbook kernel: workqueue: rtl_watchdog_wq_callback [rtlwifi] hogged CPU for >13333us 4 times, consider switching to WQ_UNBOUND
nov 13 11:18:26 netbook kernel: workqueue: rtl_watchdog_wq_callback [rtlwifi] hogged CPU for >13333us 8 times, consider switching to WQ_UNBOUND
nov 13 11:52:12 netbook kernel: workqueue: rtl_watchdog_wq_callback [rtlwifi] hogged CPU for >13333us 16 times, consider switching to WQ_UNBOUND
nov 13 11:52:18 netbook kernel: rtlwifi: AP off, try to reconnect now
nov 13 11:52:28 netbook kernel: rtlwifi: AP off, try to reconnect now
nov 13 11:52:38 netbook kernel: ------------[ cut here ]------------
nov 13 11:52:38 netbook kernel: rtl8192c-common: 8051 reset fail.
nov 13 11:52:38 netbook kernel: WARNING: CPU: 1 PID: 2572 at drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c:416 rtl92c_firmware_selfreset+0xda/0xe0 [rtl8192c_common]
nov 13 11:52:38 netbook kernel: Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec intel_powerclamp snd_hda_core coretemp snd_hwdep snd_pcm uvcvideo videobuf2_vmalloc uvc videobuf2_memops snd_seq_midi videobuf2_v4l2 rtl8192ce rtl_pci videodev snd_seq_midi_event smsdvb dvb_core smsusb input_leds joydev snd_rawmidi rtl8192c_common videobuf2_common smsmdtv rtlwifi serio_raw mc rc_core at24 snd_seq snd_seq_device snd_timer mac80211 cfg80211 snd libarc4 soundcore classmate_laptop mac_hid binfmt_misc sch_fq_codel msr parport_pc ppdev lp parport efi_pstore ip_tables x_tables autofs4 btrfs blake2b_generic xor raid6_pq libcrc32c dm_mirror dm_region_hash dm_log sha256_ssse3 sha1_ssse3 ums_realtek uas usb_storage psmouse ahci i2c_i801 lpc_ich r8169 i2c_smbus libahci gma500_gfx realtek i2c_algo_bit video wmi crypto_simd cryptd
nov 13 11:52:38 netbook kernel: CPU: 1 PID: 2572 Comm: kworker/1:1 Not tainted 6.8.0-48-generic #48~22.04.1-Ubuntu
nov 13 11:52:38 netbook kernel: Hardware name: Intel Corporation Intel powered classmate PC/Intel powered classmate PC, BIOS SPCDV10L.91A.0045.2013.0313.1153 03/13/2013
nov 13 11:52:38 netbook kernel: Workqueue: rtl92c_pci rtl_ips_nic_off_wq_callback [rtlwifi]
nov 13 11:52:38 netbook kernel: RIP: 0010:rtl92c_firmware_selfreset+0xda/0xe0 [rtl8192c_common]
nov 13 11:52:38 netbook kernel: Code: cc cc 0f b6 1d 6a 99 f9 ff 80 fb 01 0f 87 b6 6c 00 00 83 e3 01 75 da 48 c7 c7 48 99 b8 c0 c6 05 4e 99 f9 ff 01 e8 96 06 af da <0f> 0b eb c3 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
nov 13 11:52:38 netbook kernel: RSP: 0000:ffffb17402d53ce8 EFLAGS: 00010246
nov 13 11:52:38 netbook kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
nov 13 11:52:38 netbook kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
nov 13 11:52:38 netbook kernel: RBP: ffffb17402d53cf8 R08: 0000000000000000 R09: 0000000000000000
nov 13 11:52:38 netbook kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff982945f01fc0
nov 13 11:52:38 netbook kernel: R13: 0000000000000001 R14: 0000000000000002 R15: ffff982945f00900
nov 13 11:52:38 netbook kernel: FS: 0000000000000000(0000) GS:ffff9829bcc80000(0000) knlGS:0000000000000000
nov 13 11:52:38 netbook kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
nov 13 11:52:38 netbook kernel: CR2: 0000115c96af6000 CR3: 0000000009efc000 CR4: 00000000000006f0
nov 13 11:52:38 netbook kernel: Call Trace:
nov 13 11:52:38 netbook kernel:
nov 13 11:52:38 netbook kernel: ? show_regs+0x6d/0x80
nov 13 11:52:38 netbook kernel: ? __warn+0x89/0x160
nov 13 11:52:38 netbook kernel: ? rtl92c_firmware_selfreset+0xda/0xe0 [rtl8192c_common]
nov 13 11:52:38 netbook kernel: ? report_bug+0x17e/0x1b0
nov 13 11:52:38 netbook kernel: ? handle_bug+0x46/0x90
nov 13 11:52:38 netbook kernel: ? exc_invalid_op+0x18/0x80
nov 13 11:52:38 netbook kernel: ? asm_exc_invalid_op+0x1b/0x20
nov 13 11:52:38 netbook kernel: ? rtl92c_firmware_selfreset+0xda/0xe0 [rtl8192c_common]
nov 13 11:52:38 netbook kernel: ? rtl92c_firmware_selfreset+0xda/0xe0 [rtl8192c_common]
nov 13 11:52:38 netbook kernel: _rtl92ce_poweroff_adapter+0x5ce/0x610 [rtl8192ce]
nov 13 11:52:38 netbook kernel: rtl92ce_card_disable+0x78/0x90 [rtl8192ce]
nov 13 11:52:38 netbook kernel: rtl_ps_disable_nic+0x57/0x70 [rtlwifi]
nov 13 11:52:38 netbook kernel: _rtl92ce_phy_set_rf_power_state+0x203/0x280 [rtl8192ce]
nov 13 11:52:38 netbook kernel: rtl92c_phy_set_rf_power_state+0x1a/0x40 [rtl8192ce]
nov 13 11:52:38 netbook kernel: rtl_ps_set_rf_state.isra.0+0x117/0x130 [rtlwifi]
nov 13 11:52:38 netbook kernel: _rtl_ps_inactive_ps+0x3b/0xe0 [rtlwifi]
nov 13 11:52:38 netbook kernel: rtl_ips_nic_off_wq_callback+0x14b/0x160 [rtlwifi]
nov 13 11:52:38 netbook kernel: process_one_work+0x175/0x350
nov 13 11:52:38 netbook kernel: worker_thread+0x306/0x440
nov 13 11:52:38 netbook kernel: ? _raw_spin_lock_irqsave+0xe/0x20
nov 13 11:52:38 netbook kernel: ? __pfx_worker_thread+0x10/0x10
nov 13 11:52:38 netbook kernel: kthread+0xef/0x120
nov 13 11:52:38 netbook kernel: ? __pfx_kthread+0x10/0x10
nov 13 11:52:38 netbook kernel: ret_from_fork+0x44/0x70
nov 13 11:52:38 netbook kernel: ? __pfx_kthread+0x10/0x10
nov 13 11:52:38 netbook kernel: ret_from_fork_asm+0x1b/0x30
nov 13 11:52:38 netbook kernel:
nov 13 11:52:38 netbook kernel: —[ end trace 0000000000000000 ]—
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:43 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:43 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:50 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:50 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:50 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:50 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:50 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:50 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:50 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:50 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:50 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:50 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:50 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:50 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:50 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:50 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:50 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:50 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:50 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:50 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:52:51 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:52:51 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:54:38 netbook kernel: rtl8192c_common: Polling FW ready fail! REG_MCUFWDL:0x02030007.
nov 13 11:54:38 netbook kernel: rtl8192c_common: Firmware is not ready to run!
nov 13 11:56:27 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:27 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:56:27 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:27 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:56:27 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:27 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:56:27 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:27 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:56:27 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:27 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:56:27 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:27 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:56:28 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:28 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:56:28 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:28 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:56:28 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:28 netbook kernel: rtl8192ce: Init MAC failed
nov 13 11:56:28 netbook kernel: rtl8192ce: Failed to polling write LLT done at address 0!
nov 13 11:56:28 netbook kernel: rtl8192ce: Init MAC failed