This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1855722 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1855722 Title: linux 5.4 generic: db820c: drm fail to work Status in linux package in Ubuntu: Incomplete Bug description: Drm fail to work on db820c with Focal 5.4 kernel: ... [ 19.217593] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 19.217603] [drm] Driver supports precise vblank timestamp query. [ 19.236376] [drm] Initialized msm 1.5.0 20130625 for 900000.mdss on minor 0 [ 19.238653] msm 900000.mdss: [drm:adreno_request_fw [msm]] loaded qcom/a530_pm4.fw from new location [ 19.239940] dwc3-qcom 76f8800.usb: IRQ hs_phy_irq not found [ 19.240295] msm 900000.mdss: [drm:adreno_request_fw [msm]] loaded qcom/a530_pfp.fw from new location [ 19.240660] dwc3-qcom 76f8800.usb: IRQ dp_hs_phy_irq not found [ 19.241802] msm 900000.mdss: [drm:adreno_request_fw [msm]] loaded qcom/a530v3_gpmu.fw2 from new location [ 19.246138] dwc3-qcom 76f8800.usb: IRQ dm_hs_phy_irq not found [ 19.246170] ------------[ cut here ]------------ [ 19.250493] gpu_gx_gfx3d_clk status stuck at 'off' [ 19.250527] WARNING: CPU: 0 PID: 316 at drivers/clk/qcom/clk-branch.c:91 clk_branch_toggle+0x1a8/0x1c8 [ 19.250530] Modules linked in: snd_soc_apq8096(+) snd_soc_qcom_common snd_soc_core dwc3 nls_iso8859_1 qcom_spmi_pmic ulpi snd_compress regmap_spmi ud c_core ac97_bus sha256_arm64(+) snd_pcm_dmaengine snd_pcm venus_core(+) msm(+) snd_timer v4l2_mem2mem snd icc_core videobuf2_v4l2 atl1c soundcore sha1_c e videobuf2_common fixed hci_uart btqca drm_kms_helper btrtl btbcm btintel videodev mc bluetooth glink_ssr drm qrtr slim_qcom_ngd_ctrl fb_sys_fops slimb us ecdh_generic syscopyarea sysfillrect sysimgblt qcom_rng ecc spi_qup i2c_qup gpio_keys spmi_pmic_arb spmi dwc3_qcom ufs_qcom qcom_q6v5_pas qcom_sysmon qcom_q6v5 socinfo qmi_helpers mdt_loader qcom_common rmtfs_mem qcom_glink_smem uio_pdrv_genirq uio sch_fq_codel ip_tables x_tables autofs4 [ 19.250618] CPU: 0 PID: 316 Comm: systemd-udevd Not tainted 5.4.0-8-generic #9~genericfold2 [ 19.250620] Hardware name: Qualcomm Technologies, Inc. DB820c (DT) [ 19.250624] pstate: 60400085 (nZCv daIf +PAN -UAO) [ 19.250628] pc : clk_branch_toggle+0x1a8/0x1c8 [ 19.250632] lr : clk_branch_toggle+0x1a8/0x1c8 [ 19.250634] sp : ffff800012bcb240 [ 19.250636] x29: ffff800012bcb240 x28: ffff0000d86c2d00 [ 19.250640] x27: ffff800012bcb578 x26: 0000000000000004 [ 19.250644] x25: ffff800011d36008 x24: 0000000000000000 [ 19.250648] x23: ffff8000112e89c8 x22: 0000000000000001 [ 19.250651] x21: ffff8000107d1f90 x20: ffff0000d86c2d00 [ 19.250655] x19: 0000000000000000 x18: 0000000000000010 [ 19.250658] x17: 0000000000000000 x16: 0000000000000000 [ 19.250662] x15: ffff0000d86c3228 x14: ffffffffffffffff [ 19.250665] x13: ffff800092bcaed7 x12: ffff800012bcaedf [ 19.250669] x11: 000000000000000d x10: 0000000000000043 [ 19.250672] x9 : 00000000fffffffe x8 : 2073757461747320 [ 19.250676] x7 : 6b6c635f64337866 x6 : ffff800011e3648e [ 19.250680] x5 : 0000000000000026 x4 : 0000000000000000 [ 19.250683] x3 : 0000000000000000 x2 : 00000000ffffffff [ 19.250686] x1 : 49f2e2e16f79ce00 x0 : 0000000000000000 [ 19.250691] Call trace: [ 19.250696] clk_branch_toggle+0x1a8/0x1c8 [ 19.250699] clk_branch2_enable+0x2c/0x38 [ 19.250704] clk_core_enable+0x70/0x228 [ 19.250707] clk_core_enable_lock+0x28/0x48 [ 19.250710] clk_enable+0x28/0x38 [ 19.250716] clk_bulk_enable+0x40/0xb0 [ 19.250828] msm_gpu_pm_resume+0xa8/0x180 [msm] [ 19.250891] a5xx_pm_resume+0x20/0x158 [msm] [ 19.250954] adreno_resume+0x28/0x38 [msm] [ 19.250963] pm_generic_runtime_resume+0x3c/0x58 [ 19.250970] __genpd_runtime_resume+0x38/0xa0 [ 19.250974] genpd_runtime_resume+0x98/0x278 [ 19.250977] __rpm_callback+0x114/0x188 [ 19.250980] rpm_callback+0x34/0x98 [ 19.250982] rpm_resume+0x6a0/0x868 [ 19.250985] __pm_runtime_resume+0x70/0xf8 [ 19.251048] adreno_load_gpu+0x58/0x190 [msm] [ 19.251113] msm_open+0xa0/0xb0 [msm] [ 19.251229] drm_file_alloc+0x128/0x1f0 [drm] [ 19.251287] drm_client_init+0xb4/0x150 [drm] [ 19.251317] drm_fb_helper_init.part.0+0x50/0x58 [drm_kms_helper] [ 19.251357] drm_fb_helper_init+0x34/0x50 [drm_kms_helper] [ 19.251432] msm_fbdev_init+0x68/0xf0 [msm] [ 19.251515] msm_drm_init.constprop.0+0x5a8/0x620 [msm] [ 19.251600] msm_drm_bind+0x20/0x30 [msm] [ 19.251627] try_to_bring_up_master+0x220/0x2f8 [ 19.251643] component_master_add_with_match+0xbc/0x100 [ 19.251709] msm_pdev_probe+0x274/0x318 [msm] [ 19.251740] platform_drv_probe+0x58/0xa8 [ 19.251749] really_probe+0xe4/0x438 [ 19.251754] driver_probe_device+0xe4/0x138 [ 19.251759] device_driver_attach+0x74/0x80 [ 19.251763] __driver_attach+0xac/0x178 [ 19.251769] bus_for_each_dev+0x80/0xd0 [ 19.251773] driver_attach+0x30/0x40 [ 19.251777] bus_add_driver+0x144/0x220 [ 19.251782] driver_register+0x64/0x110 [ 19.251786] __platform_driver_register+0x54/0x60 [ 19.251850] msm_drm_register+0x60/0x6c [msm] [ 19.251875] do_one_initcall+0x50/0x220 [ 19.251886] do_init_module+0x5c/0x248 [ 19.251903] load_module+0xecc/0x1170 [ 19.251909] __do_sys_finit_module+0xac/0x110 [ 19.251915] __arm64_sys_finit_module+0x28/0x38 [ 19.251922] el0_svc_common.constprop.0+0xdc/0x1d8 [ 19.251926] el0_svc_handler+0x34/0xa0 [ 19.251931] el0_svc+0x10/0x14 [ 19.251959] ---[ end trace f3e814e2f2a82be0 ]--- [ 19.252131] Failed to enable clk 'core': -16 [ 19.252338] dwc3-qcom 76f8800.usb: IRQ ss_phy_irq not found [ 19.308910] msm 900000.mdss: [drm:adreno_load_gpu [msm]] *ERROR* Couldn't power up the GPU: -16 [ 19.309018] [drm] Cannot find any crtc or sizes ... the bord boots fine, but there's no video output. 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