June 2025 - Wine-Bugs - list.winehq.org

[Bug 58397] Missing power_supply class attributes for NtPowerInformation blocks threads and causes fps stutter

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=58397 Tomás Mendes <rtdiasmendes(a)gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rtdiasmendes(a)gmail.com --- Comment #1 from Tomás Mendes <rtdiasmendes(a)gmail.com> --- Just to clarify: The strace messages seen on the attachment repeat in loop while the game is running. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 20, 2025

[Bug 58397] New: Missing power_supply class attributes for NtPowerInformation blocks threads and causes fps stutter

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=58397 Bug ID: 58397 Summary: Missing power_supply class attributes for NtPowerInformation blocks threads and causes fps stutter Product: Wine Version: unspecified Hardware: x86-64 OS: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: ntdll Assignee: wine-bugs(a)winehq.org Reporter: rtdiasmendes(a)gmail.com Distribution: Mint Created attachment 78805 --> http://bugs.winehq.org/attachment.cgi?id=78805 logs mentioned in the bug Description Affected Application: - Tainted Grail: Fall of Avalon Observed Symptoms: - Frametime spikes from ~5ms to ~100ms occurring at ~1Hz intervals. - GPU frame dispatch (via DXVK) is delayed due to thread blocking in Wine’s battery status polling logic. Performance Analysis (see attached logs): - strace shows constant, repeated attempts to read nonexistent files in /sys/class/power_supply/BAT1/ - perf stat reveals ~8,270 openat() syscalls in 10 second window (on game title screen). - perf record/report shows significant thread time consumed inside NtPowerInformation-related logic in ntdll. Root Cause: - In dlls/ntdll/unix/system.c, the function fill_battery_state() (Linux version) hardcodes the use of attributes: "charge_now" "charge_full" and "current_now". - These attributes are not universally present in /sys/class/power_supply/. On some systems, particularly those using energy-based reporting (µWh), the ABI-compliant alternatives are: "energy_now", "energy_full" and "power_now". - Since Wine looks only for the "charge_*" files and fails to return expected information, the game loops the query constantly which results in openat() being used in a tight polling loop - blocking threads and causing intermittent CPU stalls that propagate to the GPU rendering pipeline. Solution 1: - Verify what attributes are present in the power_supply class. - Implement logic with supplied attributes. Solution 2: - Attempt to read the already-implemented files. - Fallback to "energy_*" if those are not present. I gather solution 1 has a more consistent impact across different systems, while solution 2 is more lightweight on systems with "charge_*" and heavier on others. Further reading: - https://docs.kernel.org/power/power_supply_class.html - https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-power - https://github.com/torvalds/linux/blob/master/include/linux/power_supply.h - https://github.com/torvalds/linux/blob/master/drivers/power/supply/power_su… Note: Attribute "scope", while implemented in the kernel, is undocumented in the power_supply_class docs. Will later check if the rest of the documentation is up to date and raise the appropriate issue upstream. Until then, do not assume it correctly reflects the kernel implementation. Disclaimer: This issue was identified and reproduced using Proton-GE, Proton (Steam Runtime), Soda and Flatpak's build. I am reporting it here for visibility and discussion since it appears to originate from WineHQ’s upstream implementation of NtPowerInformation. Out-of-scope commentary: While Wine's behavior of querying /sys/class/power_supply/ on every NtPowerInformation() call correctly emulates the Windows API semantics, it has unintended performance implications on Linux. This is due to the fact that retrieving battery information from sysfs involves real filesystem I/O, including frequent failed lookups on systems that expose energy_* instead of charge_* attributes. Therefore, applications may call NtPowerInformation() without prioritizing caching or proper fallback logic as they expect the operation to have a lower-cost then it does on Linux - causing significant and unnecessary performance degradation. Will raise this for an enchancement in the proper channels. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 20, 2025

[Bug 58257] CD Manipulator cannot detect the drive model name in experimental wow64 mode.

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=58257 --- Comment #4 from Michael Lelli <toadking(a)toadking.com> --- Sorry to double-post but I can confirm this MR also fixes the issue for FindVUK: https://gitlab.winehq.org/wine/wine/-/merge_requests/8120 Also the previous comment probably meant to link Bug #58391 -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 19, 2025

[Bug 58257] CD Manipulator cannot detect the drive model name in experimental wow64 mode.

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=58257 Michael Lelli <toadking(a)toadking.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |toadking(a)toadking.com --- Comment #3 from Michael Lelli <toadking(a)toadking.com> --- I have a similar issue with the FindVUK program, only it's failing on IOCTL_SCSI_PASS_THROUGH (no _DIRECT). 0160:trace:cdrom:cdrom_DeviceIoControl 0xc8 IOCTL_SCSI_PASS_THROUGH 0x11fc3c 44 0x11fc3c 300 0x7ffffe1ff500 -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 19, 2025

[Bug 58396] virtual terminal captures mouse

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=58396 Todd Chester <ToddAndMargo(a)zoho.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|virtual terminal captures |virtual terminal captures |moue |mouse -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 19, 2025

[Bug 58396] New: virtual terminal captures moue

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=58396 Bug ID: 58396 Summary: virtual terminal captures moue Product: Wine Version: 10.10 Hardware: x86-64 OS: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: explorerframe Assignee: wine-bugs(a)winehq.org Reporter: ToddAndMargo(a)zoho.com Distribution: --- Hi All, Fedora 41 wine-devel-10.10-1.1.x86_64 bash -c "cd /home/todd/.wine/drive_c/lotus/wordpro; wine explorer /desktop=WordPro_`date +%%H:%%M:%%S`_1680x1050,1680x1050 wordpro.exe" Occasionally, the mouse can't escape the terminal. You have to exit the program to get your mouse back Many thanks, -T -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 19, 2025

[Bug 57828] Approach Smart Icons do not show

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=57828 --- Comment #15 from Todd Chester <ToddAndMargo(a)zoho.com> --- Still an issue under wine-devel-10.10-1.1.x86_64 -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 19, 2025

[Bug 56783] MySims doesn't render the character creation screen

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=56783 --- Comment #3 from Patrick Hibbs <hibbsncc1701(a)gmail.com> --- Still present in Wine 10.10. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 19, 2025

[Bug 56782] MySims does not display text.

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=56782 --- Comment #3 from Patrick Hibbs <hibbsncc1701(a)gmail.com> --- Still present in Wine-10.10. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 19, 2025

[Bug 58395] SimCity 2000 Network Edition doesn't allow starting a game.

by WineHQ Bugzilla

http://bugs.winehq.org/show_bug.cgi?id=58395 --- Comment #2 from Patrick Hibbs <hibbsncc1701(a)gmail.com> --- Created attachment 78804 --> http://bugs.winehq.org/attachment.cgi?id=78804 Picture of connection method dialog. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.

June 19, 2025