Described in the screen shot and attached reddit post. Reproducible: Sometimes Steps to Reproduce: 1. Use KDE for an undetermined amount of time 2. Error appears 3. This is from my ~/.xsession-errors file while I open up dolphin and mouse over the contents of the folder. kio_file(6972) kdemain: Starting 6972 QNativeImage: Unable to attach to shared memory segment. X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 62 (X_CopyArea) Resource id: 0x0 X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 56 (X_ChangeGC) Resource id: 0x0 There are MANY more lines than this. This is just the first handful.
Check: ipcs -m | wc -l vs cat /proc/sys/kernel/shmmni If close or over, increase the latter. You can use ipcs -pm to try to figure out which processes are allocating too many shared memory segments instead of using larger, merged segments.
Is this still happening in a recent version of Plasma, such as 5.19 or later?
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!