From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 55CC31DCB09 for ; Wed, 15 Jan 2025 22:23:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736979792; cv=none; b=QfauGH0UE6ty+RupB3+Ecb6JG1pnxQ0yKimyaVOby+zArPQbpqb/GvbMPFTGKPai9xYt9O/f0J1Yr2ezWVGczaeGLwomiitCVmvOuKAVMN3XD1XKbgGsGXWNgX+UtgnEwgvC4DfCI/rIHQtME3i7OYhr7zuJ3Og7zT3DnQkxero= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736979792; c=relaxed/simple; bh=AeopueVkVDYf5UnDjUJQ3vz8JYYbJEb0S30mcNCGcAE=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=ezOadvxrud5NboURBa5FzUQrlK4FEjaZ3Z4SuTGH6hGgsPRUhNS+hEDkLaq/ZjGdP9fWpXX5IWS90IHxyrRC5HTnpFBS097Ci+88mpNc3XFEZdxvc+Pk+iCLuJczNI8qQFfSKvPSpdh1snuuBAhG/UTaCC4iNiQxgrKTISBznUQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tFfyTwmT; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tFfyTwmT" Received: by smtp.kernel.org (Postfix) with ESMTPS id D905FC4CEE1 for ; Wed, 15 Jan 2025 22:23:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736979791; bh=AeopueVkVDYf5UnDjUJQ3vz8JYYbJEb0S30mcNCGcAE=; h=From:To:Subject:Date:From; b=tFfyTwmTCB6jn3oOU0dGQqt4K5IEkiBC6vFXTpvJn06ISCx/4FErlRnhF+rb2ej12 9mrSrCI8Lt6ohqQE7rU2s+UvrTBHpbRcpPpjQoBQ/DUyJ/XmkAyYZVlnCeLm5mUesW SXhqC12wx6JtUZT4Suweb6xeiLjWczZi1uN8QvyQpEC96wihW/CcI9qQHNdstg/89m VNwChCtNA/x0+IEC4jA6zOVLdvU9ynzJpnu8rZ/Ipd4J7fD/32K9LHf5MLAER3KGDx XTh/KRBoZL05tD+KrO4YzfbrXCKzOtncEkMH7fcqomBn/LLHLpeQq4lg9+pirMcUOs qX63LZXiIM/0g== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id CBE20C41614; Wed, 15 Jan 2025 22:23:11 +0000 (UTC) From: bugzilla-daemon@kernel.org To: platform-driver-x86@vger.kernel.org Subject: [Bug 219696] New: touchscreen (i2c) stop working after hibernation (Lenovo YB1-X91F) Date: Wed, 15 Jan 2025 22:23:11 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: AssignedTo drivers_platform_x86@kernel-bugs.osdl.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: Platform_x86 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: lakostis@altlinux.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_platform_x86@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cf_regression Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D219696 Bug ID: 219696 Summary: touchscreen (i2c) stop working after hibernation (Lenovo YB1-X91F) Product: Drivers Version: 2.5 Hardware: Intel OS: Linux Status: NEW Severity: normal Priority: P3 Component: Platform_x86 Assignee: drivers_platform_x86@kernel-bugs.osdl.org Reporter: lakostis@altlinux.org Regression: No Hello! Trying to get hibernation working on my Lenovo YB1-X91F but getting kernel WARNING after resume and touchscreen doesn't work until suspend or reboot: On first attempt WARNING is generated: Jan 15 11:20:46 localhost.localdomain kernel: ACPI: PM: Waking up from syst= em sleep state S4 Jan 15 11:20:46 localhost.localdomain kernel: ------------[ cut here ]------------ Jan 15 11:20:46 localhost.localdomain kernel: i2c i2c-5: Transfer while suspended Jan 15 11:20:46 localhost.localdomain kernel: WARNING: CPU: 0 PID: 3010 at drivers/i2c/i2c-core.h:56 __i2c_smbus_xfer+0x1ce/0x1e0 Jan 15 11:20:46 localhost.localdomain kernel: Modules linked in: brcmfmac_wcc(E) rfcomm(E) snd_seq_dummy(E) snd_hrtimer(E) qrtr(E) cmac(E) algif_hash(E) algif_skcipher(E) af_alg(E) bnep(E) uinput(E) hid_sensor_custom_intel_hinge(E) hid_sensor_als(E) hid_sensor_accel_3d(E) hid_sensor_trigger(E) hid_sensor_iio_common(E) hid_sensor_custom(E) coretem= p(E) intel_powerclamp(E) kvm_intel(E) hid_sensor_hub(E) kvm(E) snd_soc_sst_cht_yogabook(E) bq27xxx_battery_i2c(E) bq27xxx_battery(E) mei_hdcp(E) snd_soc_ts3a227e(E) intel_ishtp_hid(E) mei_pxp(E) intel_rapl_ms= r(E) crct10dif_pclmul(E) ledtrig_pattern(E) atomisp(CE) iTCO_wdt(E) iTCO_vendor_support(E) spi_intel_platform(E) polyval_generic(E) spi_intel(E) ghash_clmulni_intel(E) atomisp_gmin_platform(CE) gpio_keys(E) ipu_bridge(E) sha512_ssse3(E) v4l2_fwnode(E) x86_android_tablets(E) sha256_ssse3(E) v4l2_async(E) sha1_ssse3(E) videobuf2_vmalloc(E) processor_thermal_device_pci_legacy(E) videobuf2_memops(E) aesni_intel(E) processor_thermal_device(E) videobuf2_v4l2(E) snd_intel_sst_acpi(E) crypto_simd(E) Jan 15 11:20:46 localhost.localdomain kernel: processor_thermal_wt_hint(E) cryptd(E) snd_soc_acpi_intel_match(E) intel_cstate(E) snd_soc_rt5677(E) snd_soc_acpi(E) processor_thermal_rfim(E) pcspkr(E) lenovo_yogabook(E) snd_intel_sst_core(E) hci_uart(E) nls_utf8(E) processor_thermal_rapl(E) videodev(E) snd_soc_sst_atom_hifi2_platform(E) snd_soc_rt5677_spi(E) btqca(= E) brcmfmac(E) wacom(E) nls_cp866(E) snd_soc_rl6231(E) intel_rapl_common(E) wmi_bmof(E) snd_soc_core(E) processor_thermal_wt_req(E) pwrseq_core(E) usbhid(E) videobuf2_common(E) processor_thermal_power_floor(E) mei_txe(E) xhci_pci(E) vfat(E) btrtl(E) brcmutil(E) processor_thermal_mbox(E) mc(E) cfg80211(E) leds_cht_wcove(E) fat(E) xhci_hcd(E) intel_soc_dts_iosf(E) snd_hdmi_lpe_audio(E) btintel(E) snd_intel_dspcfg(E) usbcore(E) intel_ish_ipc(E) snd_compress(E) lpc_ich(E) btbcm(E) mei(E) snd_pcm_dmaengine(E) sx9310(E) intel_ishtp(E) ac97_bus(E) sx_common(E) bluetooth(E) industrialio_triggered_buffer(E) kfifo_buf(E) snd_pcm(E) industrialio(E) usb_common(E) thermal(E) intel_hid(E) Jan 15 11:20:46 localhost.localdomain kernel: int3400_thermal(E) int3403_thermal(E) acpi_thermal_rel(E) int340x_thermal_zone(E) sparse_keyma= p(E) intel_int0002_vgpio(E) int3406_thermal(E) spi_pxa2xx_platform(E) tpm_crb(E) spi_pxa2xx_core(E) rfkill_gpio(E) rfkill(E) drv260x(E) tpm_tis(E) tiny_power_button(E) tpm_tis_core(E) soc_button_array(E) acpi_pad(E) button= (E) sch_fq_codel(E) snd_seq_midi(E) snd_seq_midi_event(E) snd_seq(E) snd_rawmid= i(E) snd_seq_device(E) snd_timer(E) snd(E) soundcore(E) msr(E) binder_linux(OE) fuse(E) loop(E) efi_pstore(E) dm_mod(E) configfs(E) nfnetlink(E) efivarfs(E) tpm(E) libaescfb(E) ecdh_generic(E) ecc(E) ip_tables(E) x_tables(E) autofs4= (E) f2fs(E) crc32_generic(E) lz4hc_compress(E) lz4_compress(E) i915(E) hwmon(E) i2c_algo_bit(E) drm_buddy(E) ttm(E) intel_gtt(E) drm_display_helper(E) mmc_block(E) cec(E) evdev(E) video(E) hid_multitouch(E) hid_generic(E) joydev(E) crc32_pclmul(E) crc32c_intel(E) rc_core(E) sdhci_acpi(E) sdhci(E) i2c_hid_acpi(E) i2c_hid(E) hid(E) mmc_core(E) goodix_ts(E) wmi(E) Jan 15 11:20:46 localhost.localdomain kernel: Unloaded tainted modules: polyval_clmulni(E):1 snd_pcsp(E):1 acpi_cpufreq(E):1 ac(E):2 Jan 15 11:20:46 localhost.localdomain kernel: CPU: 0 UID: 0 PID: 3010 Comm: systemd-sleep Tainted: G C OE 6.12.0-yogabook-alt1.9 #1 Jan 15 11:20:46 localhost.localdomain kernel: Tainted: [C]=3DCRAP, [O]=3DOOT_MODULE, [E]=3DUNSIGNED_MODULE Jan 15 11:20:46 localhost.localdomain kernel: Hardware name: LENOVO Lenovo YB1-X91F/Lenovo YB1-X91F, BIOS 04WT23WW 01/17/2018 Jan 15 11:20:46 localhost.localdomain kernel: RIP: 0010:__i2c_smbus_xfer+0x1ce/0x1e0 Jan 15 11:20:46 localhost.localdomain kernel: Code: af c0 00 00 00 48 85 ed= 75 04 48 8b 6f 70 48 8d 7b 70 e8 65 12 f1 ff 48 8d 30 48 8d 55 00 48 c7 c7 38 = b8 4c 8a e8 52 99 7a ff <0f> 0b b8 94 ff ff ff e9 46 ff ff ff 66 0f 1f 44 00 0= 0 90 90 90 90 Jan 15 11:20:46 localhost.localdomain kernel: RSP: 0018:ffffbaf94055b360 EFLAGS: 00010246 Jan 15 11:20:46 localhost.localdomain kernel: RAX: 0000000000000000 RBX: ffff9fcf810b70e8 RCX: 0000000000000000 Jan 15 11:20:46 localhost.localdomain kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 Jan 15 11:20:46 localhost.localdomain kernel: RBP: ffff9fcf803bc8c0 R08: 0000000000000000 R09: 0000000000000000 Jan 15 11:20:46 localhost.localdomain kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffffbaf94055b3fe Jan 15 11:20:46 localhost.localdomain kernel: R13: 0000000000000001 R14: 0000000000000057 R15: 0000000000000002 Jan 15 11:20:46 localhost.localdomain kernel: FS: 00007fc466a05600(0000) GS:ffff9fcffbc00000(0000) knlGS:0000000000000000 Jan 15 11:20:46 localhost.localdomain kernel: CS: 0010 DS: 0000 ES: 0000 C= R0: 0000000080050033 Jan 15 11:20:46 localhost.localdomain kernel: CR2: 00005596c8b42596 CR3: 000000013344c000 CR4: 00000000001026f0 Jan 15 11:20:46 localhost.localdomain kernel: Call Trace: Jan 15 11:20:46 localhost.localdomain kernel: Jan 15 11:20:46 localhost.localdomain kernel: ? __warn.cold+0x93/0xaf Jan 15 11:20:46 localhost.localdomain kernel: ? __i2c_smbus_xfer+0x1ce/0x1= e0 Jan 15 11:20:46 localhost.localdomain kernel: ? report_bug+0xfb/0x180 Jan 15 11:20:46 localhost.localdomain kernel: ? handle_bug+0x66/0xa0 Jan 15 11:20:46 localhost.localdomain kernel: ? exc_invalid_op+0x18/0x80 Jan 15 11:20:46 localhost.localdomain kernel: ? asm_exc_invalid_op+0x16/0x= 20 Jan 15 11:20:46 localhost.localdomain kernel: ? __i2c_smbus_xfer+0x1ce/0x1= e0 Jan 15 11:20:46 localhost.localdomain kernel: i2c_smbus_xfer+0x8d/0x130 Jan 15 11:20:46 localhost.localdomain kernel:=20 i2c_smbus_read_byte_data+0x3e/0x80 Jan 15 11:20:46 localhost.localdomain kernel: ? __pfx_kvm_resume+0x10/0x10 [kvm] Jan 15 11:20:46 localhost.localdomain kernel: ? sprintf+0x58/0x90 Jan 15 11:20:46 localhost.localdomain kernel: cht_wc_byte_reg_read+0x2e/0x= 50 Jan 15 11:20:46 localhost.localdomain kernel: _regmap_read+0x57/0xd0 Jan 15 11:20:46 localhost.localdomain kernel: _regmap_update_bits+0xc8/0x1= 20 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_rs_convert_aml_to_resource+0x150/0x870 Jan 15 11:20:46 localhost.localdomain kernel:=20 regmap_update_bits_base+0x5a/0xa0 Jan 15 11:20:46 localhost.localdomain kernel:=20 intel_cht_wc_pmic_update_power+0x1a/0x40 Jan 15 11:20:46 localhost.localdomain kernel:=20 intel_pmic_power_handler+0xa6/0x140 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_ev_address_space_dispatch+0x179/0x4e0 Jan 15 11:20:46 localhost.localdomain kernel: ? chv_gpio_set+0x1d/0xa0 Jan 15 11:20:46 localhost.localdomain kernel: ? _raw_spin_unlock_irqrestore+0x22/0x60 Jan 15 11:20:46 localhost.localdomain kernel: ? __pfx_intel_pmic_power_handler+0x10/0x10 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_ex_access_region+0x2a0/0x540 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ut_acquire_mutex+0x98/0x270 Jan 15 11:20:46 localhost.localdomain kernel: ? up+0xe/0x60 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_ex_field_datum_io+0x9a/0x650 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_ex_write_with_update_rule+0xdd/0x260 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ns_search_one_scope+0xbb/0x290 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ex_field_datum_io+0xe1/0x650 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ut_repair_name+0x2b/0= x100 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_ex_insert_into_field+0x347/0x410 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_ex_write_data_to_field+0xd3/0x3d0 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ut_allocate_object_desc_dbg+0x8e/0x130 Jan 15 11:20:46 localhost.localdomain kernel: ? kfree+0x15b/0x300 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_ex_store_object_to_node+0x1cc/0x3d0 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ds_create_operand+0xd7/0x4e0 Jan 15 11:20:46 localhost.localdomain kernel: acpi_ex_store+0x23d/0x4c0 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_ex_opcode_1A_1T_1R+0xf5/0x690 Jan 15 11:20:46 localhost.localdomain kernel: acpi_ds_exec_end_op+0x1a0/0x= 910 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ps_get_next_arg+0x173/0x9f0 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ps_complete_op+0x151/0x500 Jan 15 11:20:46 localhost.localdomain kernel: acpi_ps_parse_loop+0x132/0xa= 50 Jan 15 11:20:46 localhost.localdomain kernel: ? kmem_cache_alloc_noprof+0x1c6/0x250 Jan 15 11:20:46 localhost.localdomain kernel: acpi_ps_parse_aml+0xba/0x610 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ut_create_internal_object_dbg+0xba/0x130 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_ps_execute_method+0x170/0x3e0 Jan 15 11:20:46 localhost.localdomain kernel: ? acpi_ns_get_normalized_pathname+0xbe/0x190 Jan 15 11:20:46 localhost.localdomain kernel: acpi_ns_evaluate+0x171/0x5e0 Jan 15 11:20:46 localhost.localdomain kernel: acpi_evaluate_object+0x1d9/0= x470 Jan 15 11:20:46 localhost.localdomain kernel: __acpi_power_on+0x1e/0x100 Jan 15 11:20:46 localhost.localdomain kernel:=20 acpi_resume_power_resources+0x71/0xc0 Jan 15 11:20:46 localhost.localdomain kernel: acpi_pm_finish.cold+0x35/0x83 Jan 15 11:20:46 localhost.localdomain kernel: hibernation_snapshot+0x2bf/0= x4b0 Jan 15 11:20:46 localhost.localdomain kernel: hibernate.cold+0xa3/0x342 Jan 15 11:20:46 localhost.localdomain kernel: state_store+0x8e/0xa0 Jan 15 11:20:46 localhost.localdomain kernel:=20 kernfs_fop_write_iter+0x14a/0x210 Jan 15 11:20:46 localhost.localdomain kernel: vfs_write+0x27d/0x450 Jan 15 11:20:46 localhost.localdomain kernel: ksys_write+0x61/0xf0 Jan 15 11:20:46 localhost.localdomain kernel: do_syscall_64+0x83/0x1b0 Jan 15 11:20:46 localhost.localdomain kernel: ? syscall_exit_to_user_mode+0xe6/0x120 Jan 15 11:20:46 localhost.localdomain kernel: ? do_syscall_64+0x8f/0x1b0 Jan 15 11:20:46 localhost.localdomain kernel: ? ptep_set_access_flags+0x3d/0x60 Jan 15 11:20:46 localhost.localdomain kernel: ? _raw_spin_unlock+0x10/0x40 Jan 15 11:20:46 localhost.localdomain kernel: ? wp_page_reuse.isra.0+0x7b/= 0xa0 Jan 15 11:20:46 localhost.localdomain kernel: ? do_wp_page+0x75e/0xca0 Jan 15 11:20:46 localhost.localdomain kernel: ? kmem_cache_free+0x1fc/0x3e0 Jan 15 11:20:46 localhost.localdomain kernel: ? __pte_offset_map+0x12/0x140 Jan 15 11:20:46 localhost.localdomain kernel: ? __handle_mm_fault+0x805/0x= 840 Jan 15 11:20:46 localhost.localdomain kernel: ? __count_memcg_events+0x83/0x120 Jan 15 11:20:46 localhost.localdomain kernel: ? count_memcg_events.constprop.0+0x26/0x50 Jan 15 11:20:46 localhost.localdomain kernel: ? handle_mm_fault+0x1bd/0x2c0 Jan 15 11:20:46 localhost.localdomain kernel: ? __ct_user_enter+0x92/0xd0 Jan 15 11:20:46 localhost.localdomain kernel:=20 entry_SYSCALL_64_after_hwframe+0x71/0x79 Jan 15 11:20:46 localhost.localdomain kernel: RIP: 0033:0x7fc4675948c0 Jan 15 11:20:46 localhost.localdomain kernel: Code: 85 0d 00 64 c7 00 16 00= 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 80 3d a9 0a 0e 00 00 74 = 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 8= 3 ec 28 48 89 Jan 15 11:20:46 localhost.localdomain kernel: RSP: 002b:00007ffd92533b88 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 Jan 15 11:20:46 localhost.localdomain kernel: RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fc4675948c0 Jan 15 11:20:46 localhost.localdomain kernel: RDX: 0000000000000005 RSI: 0000563e2d56de70 RDI: 0000000000000005 Jan 15 11:20:46 localhost.localdomain kernel: RBP: 0000563e2d56de70 R08: 0000000000000000 R09: 0000000000000001 Jan 15 11:20:46 localhost.localdomain kernel: R10: 0000000000000004 R11: 0000000000000202 R12: 0000000000000005 Jan 15 11:20:46 localhost.localdomain kernel: R13: 0000563e2d5662d0 R14: 00007fc46766bf20 R15: 00000000fffffff7 Jan 15 11:20:46 localhost.localdomain kernel: Jan 15 11:20:46 localhost.localdomain kernel: ---[ end trace 00000000000000= 00 ]--- Jan 15 11:20:46 localhost.localdomain kernel: ACPI Error: AE_ERROR, Returne= d by Handler for [UserDefinedRegion] (20240827/evregion-301) Jan 15 11:20:46 localhost.localdomain kernel:=20 Jan 15 11:20:46 localhost.localdomain kernel: No Local Variables are initialized for Method [_ON_] Jan 15 11:20:46 localhost.localdomain kernel:=20 Jan 15 11:20:46 localhost.localdomain kernel: No Arguments are initialized = for method [_ON_] Jan 15 11:20:46 localhost.localdomain kernel:=20 Jan 15 11:20:46 localhost.localdomain kernel: ACPI Error: Aborting method \_SB.P18W._ON due to previous error (AE_ERROR) (20240827/psparse-529) next cycles only produce ACPI Errors in the logs without WARNING (but touch= pad still don't work). --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=