[Webkit-unassigned] [Bug 263645] [GTK] The rendering of the fonts look blurred (NVIDIA card), if I launch the application with WEBKIT_DISABLE_COMPOSITING_MODE=1 they look perfect

Wed Oct 9 07:09:46 PDT 2024

https://bugs.webkit.org/show_bug.cgi?id=263645

Thomas Zajic <zlatko-webkit at zlatk0.net> changed:

           What    |Removed                     |Added
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                 CC|                            |zlatko-webkit at zlatk0.net

--- Comment #4 from Thomas Zajic <zlatko-webkit at zlatk0.net> ---
Hi,

I never had the problem with blurred fonts, but I'm also still (at least since 2.42) experiencing the "emtpy renderings" in GTK 3 applications. While as of bug #261874 I also had the same problem with GTK 4 applications, the GTK 4 problem seems to have been fixed meanwhile. Apps like "epiphany" work fine now. Just for the record, I'm currently using gtk-4.16.3.

GTK 3 apps, however, still need either WEBKIT_DISABLE_DMABUF_RENDERER=1 or WEBKIT_DISABLE_COMPOSITING_MODE=1 to work properly. Without any of these two set to 1, apps like "yelp" or "liferea" will only display an either empty or black area where WebKitGTK's output should show up. On the console, the error message "AcceleratedSurfaceDMABuf was unable to construct a complete framebuffer" is repeated several times.

My setup:

* Slackware64-15.0
* GNOME-47.0, running a ...
* gnome-flashback-3.54.0 session using ...
* metacity-3.54.0 in an *uncomposited* X11 environment ("gsettings get org.gnome.metacity compositor" => 'none')
* gtk+-3.24.43
* webkitgtk-2.46.1
* GPU: NVIDIA GeForce GTX 1660 Ti
* GPU driver: NVIDIA-Linux-x86_64-550.120 (ie. the binary, proprietary one)
* GPU driver settings:
/sys/module/nvidia_drm/parameters/fbdev:Y
/sys/module/nvidia_drm/parameters/modeset:Y
/sys/module/nvidia_modeset/parameters/config_file:(null)
/sys/module/nvidia_modeset/parameters/disable_hdmi_frl:N
/sys/module/nvidia_modeset/parameters/disable_vrr_memclk_switch:N
/sys/module/nvidia_modeset/parameters/fail_malloc:-1
/sys/module/nvidia_modeset/parameters/hdmi_deepcolor:N
/sys/module/nvidia_modeset/parameters/malloc_verbose:N
/sys/module/nvidia_modeset/parameters/opportunistic_display_sync:Y
/sys/module/nvidia_modeset/parameters/output_rounding_fix:Y
/sys/module/nvidia_modeset/parameters/vblank_sem_control:N
/sys/module/nvidia_uvm/parameters/uvm_ats_mode:1
/sys/module/nvidia_uvm/parameters/uvm_block_cpu_to_cpu_copy_with_ce:0
/sys/module/nvidia_uvm/parameters/uvm_channel_gpfifo_loc:auto
/sys/module/nvidia_uvm/parameters/uvm_channel_gpput_loc:auto
/sys/module/nvidia_uvm/parameters/uvm_channel_num_gpfifo_entries:1024
/sys/module/nvidia_uvm/parameters/uvm_channel_pushbuffer_loc:auto
/sys/module/nvidia_uvm/parameters/uvm_conf_computing_channel_iv_rotation_limit:2147483648
/sys/module/nvidia_uvm/parameters/uvm_cpu_chunk_allocation_sizes:2166784
/sys/module/nvidia_uvm/parameters/uvm_debug_enable_push_acquire_info:0
/sys/module/nvidia_uvm/parameters/uvm_debug_enable_push_desc:0
/sys/module/nvidia_uvm/parameters/uvm_debug_prints:0
/sys/module/nvidia_uvm/parameters/uvm_disable_hmm:N
/sys/module/nvidia_uvm/parameters/uvm_downgrade_force_membar_sys:1
/sys/module/nvidia_uvm/parameters/uvm_enable_builtin_tests:0
/sys/module/nvidia_uvm/parameters/uvm_enable_debug_procfs:0
/sys/module/nvidia_uvm/parameters/uvm_enable_va_space_mm:1
/sys/module/nvidia_uvm/parameters/uvm_exp_gpu_cache_peermem:0
/sys/module/nvidia_uvm/parameters/uvm_exp_gpu_cache_sysmem:0
/sys/module/nvidia_uvm/parameters/uvm_fault_force_sysmem:0
/sys/module/nvidia_uvm/parameters/uvm_force_prefetch_fault_support:0
/sys/module/nvidia_uvm/parameters/uvm_global_oversubscription:1
/sys/module/nvidia_uvm/parameters/uvm_leak_checker:0
/sys/module/nvidia_uvm/parameters/uvm_page_table_location:(null)
/sys/module/nvidia_uvm/parameters/uvm_peer_copy:phys
/sys/module/nvidia_uvm/parameters/uvm_perf_access_counter_batch_count:256
/sys/module/nvidia_uvm/parameters/uvm_perf_access_counter_mimc_migration_enable:-1
/sys/module/nvidia_uvm/parameters/uvm_perf_access_counter_momc_migration_enable:-1
/sys/module/nvidia_uvm/parameters/uvm_perf_access_counter_threshold:256
/sys/module/nvidia_uvm/parameters/uvm_perf_fault_batch_count:256
/sys/module/nvidia_uvm/parameters/uvm_perf_fault_coalesce:1
/sys/module/nvidia_uvm/parameters/uvm_perf_fault_max_batches_per_service:20
/sys/module/nvidia_uvm/parameters/uvm_perf_fault_max_throttle_per_service:5
/sys/module/nvidia_uvm/parameters/uvm_perf_fault_replay_policy:2
/sys/module/nvidia_uvm/parameters/uvm_perf_fault_replay_update_put_ratio:50
/sys/module/nvidia_uvm/parameters/uvm_perf_map_remote_on_eviction:1
/sys/module/nvidia_uvm/parameters/uvm_perf_map_remote_on_native_atomics_fault:0
/sys/module/nvidia_uvm/parameters/uvm_perf_migrate_cpu_preunmap_block_order:2
/sys/module/nvidia_uvm/parameters/uvm_perf_migrate_cpu_preunmap_enable:1
/sys/module/nvidia_uvm/parameters/uvm_perf_pma_batch_nonpinned_order:6
/sys/module/nvidia_uvm/parameters/uvm_perf_prefetch_enable:1
/sys/module/nvidia_uvm/parameters/uvm_perf_prefetch_min_faults:1
/sys/module/nvidia_uvm/parameters/uvm_perf_prefetch_threshold:51
/sys/module/nvidia_uvm/parameters/uvm_perf_reenable_prefetch_faults_lapse_msec:1000
/sys/module/nvidia_uvm/parameters/uvm_perf_thrashing_enable:1
/sys/module/nvidia_uvm/parameters/uvm_perf_thrashing_epoch:2000
/sys/module/nvidia_uvm/parameters/uvm_perf_thrashing_lapse_usec:500
/sys/module/nvidia_uvm/parameters/uvm_perf_thrashing_max_resets:4
/sys/module/nvidia_uvm/parameters/uvm_perf_thrashing_nap:1
/sys/module/nvidia_uvm/parameters/uvm_perf_thrashing_pin:300
/sys/module/nvidia_uvm/parameters/uvm_perf_thrashing_pin_threshold:10
/sys/module/nvidia_uvm/parameters/uvm_perf_thrashing_threshold:3
/sys/module/nvidia_uvm/parameters/uvm_release_asserts:1
/sys/module/nvidia_uvm/parameters/uvm_release_asserts_dump_stack:0
/sys/module/nvidia_uvm/parameters/uvm_release_asserts_set_global_error:0

If you need any more information, please let me know.

Thanks for listening! :-)
Thomas

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