<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - I7-8700 onboard HDMI port does not support 4K resolution" href="https://bugs.freedesktop.org/show_bug.cgi?id=112018#c12">Comment # 12</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - I7-8700 onboard HDMI port does not support 4K resolution" href="https://bugs.freedesktop.org/show_bug.cgi?id=112018">bug 112018</a> from <a class="email" href="mailto:jian-hong@endlessm.com" title="jian-hong@endlessm.com">jian-hong@endlessm.com</a> <pre>Created <a href="attachment.cgi?id=145962" name="attach_145962" title="Acer XC-860 dmesg with DRM debug">attachment 145962</a> <a href="attachment.cgi?id=145962&action=edit" title="Acer XC-860 dmesg with DRM debug">[details]</a> Acer XC-860 dmesg with DRM debug We have got another Acer desktop XC-860 equipped with i3-9100 CPU. 00:02.0 VGA compatible controller [0300]: Intel Corporation 8th Gen Core Processor Gaussian Mixture Model [8086:3e91] (prog-if 00 [VGA controller]) Subsystem: Acer Incorporated [ALI] 8th Gen Core Processor Gaussian Mixture Model [1025:1294] Flags: bus master, fast devsel, latency 0, IRQ 126 Memory at a0000000 (64-bit, non-prefetchable) [size=16M] Memory at 90000000 (64-bit, prefetchable) [size=256M] I/O ports at 4000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: [40] Vendor Specific Information: Len=0c <?> Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [100] Process Address Space ID (PASID) Capabilities: [200] Address Translation Service (ATS) Capabilities: [300] Page Request Interface (PRI) Kernel driver in use: i915 Kernel modules: i915 Acer's ODM said this is HDMI 2.0 adapter onboard. But it is detected as type 1 HDMI, so the max TMDS clock is set as 165 MHz. Therefore, all of the 3840x2160 resolution combinations on the list are disabled. It also hits the same issue. [ 1.392657] [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode HDMI ID: DP-HDMI ADAPTOR\004 (err 0) [ 1.393770] [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode adaptor ID: ff (err 0) [ 1.393797] [drm:intel_hdmi_set_edid [i915]] DP dual mode adaptor (type 1 HDMI) detected (max TMDS clock: 165000 kHz) [ 1.393822] [drm:drm_detect_monitor_audio [drm]] Monitor has basic audio support [ 1.393826] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]] [CONNECTOR:68:HDMI-A-1] status updated from unknown to connected [ 1.393834] [drm:drm_add_display_info [drm]] non_desktop set to 0 [ 1.393840] [drm:drm_add_display_info [drm]] HDMI: DVI dual 0, max TMDS clock 600000 kHz [ 1.393846] [drm:drm_add_display_info [drm]] HF-VSDB: max TMDS clock 600000 kHz [ 1.393860] [drm:drm_add_edid_modes [drm]] ELD monitor ASUS VP28U [ 1.393884] [drm:drm_add_edid_modes [drm]] HDMI: latency present 0 0, video latency 0 1, audio latency 96 2 [ 1.393889] [drm:drm_add_edid_modes [drm]] ELD size 36, SAD count 1 [ 1.393895] [drm:drm_add_display_info [drm]] non_desktop set to 0 [ 1.393901] [drm:drm_add_display_info [drm]] HDMI: DVI dual 0, max TMDS clock 600000 kHz [ 1.393907] [drm:drm_add_display_info [drm]] HF-VSDB: max TMDS clock 600000 kHz [ 1.394200] [drm:drm_mode_debug_printmodeline [drm]] Modeline "3840x2160": 60 594000 3840 4016 4104 4400 2160 2168 2178 2250 0x48 0x5 [ 1.394205] [drm:drm_mode_prune_invalid [drm]] Not using 3840x2160 mode: CLOCK_HIGH [ 1.394211] [drm:drm_mode_debug_printmodeline [drm]] Modeline "3840x2160": 30 297000 3840 4016 4104 4400 2160 2168 2178 2250 0x40 0x9 [ 1.394217] [drm:drm_mode_prune_invalid [drm]] Not using 3840x2160 mode: CLOCK_HIGH [ 1.394222] [drm:drm_mode_debug_printmodeline [drm]] Modeline "2560x1440": 60 241500 2560 2608 2640 2720 1440 1443 1448 1481 0x40 0x5 [ 1.394228] [drm:drm_mode_prune_invalid [drm]] Not using 2560x1440 mode: CLOCK_HIGH [ 1.394234] [drm:drm_mode_debug_printmodeline [drm]] Modeline "2560x1600": 60 268500 2560 2608 2640 2720 1600 1603 1609 1646 0x40 0x9 [ 1.394239] [drm:drm_mode_prune_invalid [drm]] Not using 2560x1600 mode: CLOCK_HIGH Seems more and more machines hit this issue.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>