I'm moving from a Lenovo m700q (i5-6400T) to an m720q (i5-9500T). I've tried both cloning my 22.04 install and attempting it on m720q, and also attempted a fresh install of a 24.04 nightly and ended up in the same place. The display looks the same on both Ubuntu versions on the newer hardware (m720q)
Install of 24.04 went fine in safe mode (nomodeset), but upon reboot, the screen looked pixelated and resolution was bad and hard to read. There are two pics below from those two different systems - tiny, clear pixels are from the m700q and the lower resolution, blurry is the m720q.
New hardware - m720q:
Old Hardware - m700q:
New System:
# grep 'i915\|drm\|intel\.' /var/log/syslog | awk '{ $2="Host"; print $0 }'2024-03-24T19:16:31.159307+00:00 Host kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-6.8.0-11-generic root=UUID=3bbe2170-8736-48fe-9779-f291e3775f70 ro enable_fbc=1 i915.enable_guc=2 splash vt.handoff=72024-03-24T19:16:31.159545+00:00 Host kernel: Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.8.0-11-generic root=UUID=3bbe2170-8736-48fe-9779-f291e3775f70 ro enable_fbc=1 i915.enable_guc=2 splash vt.handoff=72024-03-24T19:16:31.160077+00:00 Host kernel: ACPI: bus type drm_connector registered2024-03-24T19:16:31.160160+00:00 Host kernel: [drm] Initialized simpledrm 1.0.0 20200625 for simple-framebuffer.0 on minor 02024-03-24T19:16:31.160161+00:00 Host kernel: simple-framebuffer simple-framebuffer.0: [drm] fb0: simpledrmdrmfb frame buffer device2024-03-24T19:16:31.160372+00:00 Host kernel: systemd[1]: Starting modprobe@drm.service - Load Kernel Module drm...2024-03-24T19:16:31.160444+00:00 Host kernel: systemd[1]: modprobe@drm.service: Deactivated successfully.2024-03-24T19:16:31.160447+00:00 Host kernel: systemd[1]: Finished modprobe@drm.service - Load Kernel Module drm.2024-03-24T19:16:31.160546+00:00 Host kernel: i915 0000:00:02.0: vgaarb: deactivate vga console2024-03-24T19:16:31.160547+00:00 Host kernel: i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=io+mem:owns=io+mem2024-03-24T19:16:31.160547+00:00 Host kernel: i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)2024-03-24T19:16:31.160548+00:00 Host kernel: mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])2024-03-24T19:16:31.160563+00:00 Host kernel: i915 0000:00:02.0: [drm] [ENCODER:94:DDI A/PHY A] failed to retrieve link info, disabling eDP2024-03-24T19:16:32.773000+00:00 Host kernel: i915 0000:00:02.0: [drm] GT0: GuC firmware i915/kbl_guc_70.1.1.bin version 70.1.12024-03-24T19:16:32.773012+00:00 Host kernel: i915 0000:00:02.0: [drm] GT0: HuC firmware i915/kbl_huc_4.0.0.bin version 4.0.02024-03-24T19:16:32.795836+00:00 Host kernel: i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads2024-03-24T19:16:32.795841+00:00 Host kernel: i915 0000:00:02.0: [drm] GT0: GUC: submission disabled2024-03-24T19:16:32.795842+00:00 Host kernel: i915 0000:00:02.0: [drm] GT0: GUC: SLPC disabled2024-03-24T19:16:32.820869+00:00 Host kernel: [drm] Initialized i915 1.6.0 20230929 for 0000:00:02.0 on minor 12024-03-24T19:16:32.824936+00:00 Host kernel: i915 display info: display version: 92024-03-24T19:16:32.824937+00:00 Host kernel: i915 display info: cursor_needs_physical: no2024-03-24T19:16:32.824937+00:00 Host kernel: i915 display info: has_cdclk_crawl: no2024-03-24T19:16:32.824938+00:00 Host kernel: i915 display info: has_cdclk_squash: no2024-03-24T19:16:32.824938+00:00 Host kernel: i915 display info: has_ddi: yes2024-03-24T19:16:32.824939+00:00 Host kernel: i915 display info: has_dp_mst: yes2024-03-24T19:16:32.824939+00:00 Host kernel: i915 display info: has_dsb: no2024-03-24T19:16:32.824940+00:00 Host kernel: i915 display info: has_fpga_dbg: yes2024-03-24T19:16:32.824940+00:00 Host kernel: i915 display info: has_gmch: no2024-03-24T19:16:32.824941+00:00 Host kernel: i915 display info: has_hotplug: yes2024-03-24T19:16:32.824941+00:00 Host kernel: i915 display info: has_hti: no2024-03-24T19:16:32.824942+00:00 Host kernel: i915 display info: has_ipc: yes2024-03-24T19:16:32.824942+00:00 Host kernel: i915 display info: has_overlay: no2024-03-24T19:16:32.824943+00:00 Host kernel: i915 display info: has_psr: yes2024-03-24T19:16:32.824943+00:00 Host kernel: i915 display info: has_psr_hw_tracking: yes2024-03-24T19:16:32.824943+00:00 Host kernel: i915 display info: overlay_needs_physical: no2024-03-24T19:16:32.824944+00:00 Host kernel: i915 display info: supports_tv: no2024-03-24T19:16:32.824944+00:00 Host kernel: i915 display info: has_hdcp: yes2024-03-24T19:16:32.824945+00:00 Host kernel: i915 display info: has_dmc: yes2024-03-24T19:16:32.824945+00:00 Host kernel: i915 display info: has_dsc: no2024-03-24T19:16:32.872858+00:00 Host kernel: fbcon: i915drmfb (fb0) is primary device2024-03-24T19:16:32.872874+00:00 Host kernel: snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])2024-03-24T19:16:32.872877+00:00 Host kernel: i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device2024-03-24T19:16:33.613982+00:00 Host /usr/libexec/gdm-x-session[1254]: Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.8.0-11-generic root=UUID=3bbe2170-8736-48fe-9779-f291e3775f70 ro enable_fbc=1 i915.enable_guc=2 splash vt.handoff=72024-03-24T19:16:33.621472+00:00 Host /usr/libexec/gdm-x-session[1254]: (II) xfree86: Adding drm device (/dev/dri/card1)2024-03-24T19:16:33.621512+00:00 Host /usr/libexec/gdm-x-session[1254]: (II) Platform probe for /sys/devices/pci0000:00/0000:00:02.0/drm/card12024-03-24T19:16:33.629860+00:00 Host /usr/libexec/gdm-x-session[1254]: #011915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,New System:
# lspci -knn | grep -iEA5 'vga|3d|display'00:02.0 VGA compatible controller [0300]: Intel Corporation CoffeeLake-S GT2 [UHD Graphics 630] [8086:3e92] DeviceName: Onboard - Video Subsystem: Lenovo CoffeeLake-S GT2 [UHD Graphics 630] [17aa:312d] Kernel driver in use: i915 Kernel modules: i91500:08.0 System peripheral [0880]: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model [8086:1911]--00:1c.0 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express Root Port #6 [8086:a33d] (rev f0) Subsystem: Lenovo Cannon Lake PCH PCI Express Root Port [17aa:312d] Kernel driver in use: pcieport00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:a308] (rev 10) DeviceName: Onboard - Other Subsystem: Lenovo Device [17aa:312d]Old System:# lspci -knn | grep -iEA5 'vga|3d|display'00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 530 [8086:1912] (rev 06) DeviceName: Onboard IGD Subsystem: Lenovo HD Graphics 530 [17aa:30d2] Kernel driver in use: i915 Kernel modules: i91500:14.0 USB controller [0c03]: Intel Corporation 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller [8086:a12f] (rev 31)I've spent the weekend searching and haven't found any settings or options that make this work. I suspect nomodeset will work, but then I'll not be getting the benefits of the GPU acceleration.
The screen is a SunFounder 7 Inch TFT Monitor for Raspberry Pi, HDMI - 1024x600 HD LCD Screen. I did try connecting the HDMI to another, larger screen and it worked fine, so could this be an X config? I also tried this config for X11.
Section "Device" Identifier "Intel Graphics" Driver "intel"nomodeset Option "DRI" "iris" Option "AccelMethod" "uxa" Option "TearFree" "false" Option "TripleBuffer" "false" Option "SwapbuffersWait" "false" EndSection Section "Monitor" Identifier "VGA-1" Modeline "1368x768_60.00" 85.25 1368 1440 1576 1784 768 771 781 798 -hsync +vsync Modeline "1600x900_60.00" 118.25 1600 1696 1856 2112 900 903 908 934 -hsync +vsync Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync Option "PreferredMode" "1368x768_60.00" EndSection